The & Nb stone tablet is more than ten meters high and three or four meters wide. It is covered with dense fonts. It mainly introduces the origin of Qingwei Gate and the deeds of some great figures in Qingwei Gate. & Nb And behind the stone tablet, there is a huge Yanwu Square. The & Nb is so big that it can accommodate 100,000 people. & Nb Author's digression Second watch Chapter 1751 Time and Space Merchants (28). Our client is online, please go to the major stores to search for "Quick Eye Reading" to download! Thanks to the monthly ticket of [Youyou Linglong] [Focuslight], Mada (~ 3 ~); Thanks to the book coin reward of [Lime], sorry, I just saw it now; "All right, don't move. Hold your breath. It'll be all right soon." Hearing the voice of Donghua Yufan, Song Yu suddenly quieted down, then stopped and held his breath, and his eyes were closed tightly. Soon, he felt as if there was a very gentle force enveloping his body, starting from the head, has been slowly to the foot. Performed a dust-clearing technique, cleaned up the filth of Song Yu's whole body, and looked at Song Yu's little face that turned all living beings upside down. Once again can not help but praise, originally already beautiful enough evil, now wash away the lead China, more dazzling up. Although thin and weak, it is like a peerless jade that has been polished. People simply can not move their eyes, do not know why, Donghua Yufan for his future is really very worried. The aptitude is not good, and she is beautiful, but she is still a boy. Suddenly good regret Song Yu income under their own door, to know that the rest of a few at least are double spirit root, even Tao Ya Ya have found a suitable method for their own spirit root. Can Song Yu, the root of the five spirits, really maintain a normal mind under the halo of these geniuses? Think of here, Donghua Yufan sighed slightly, originally for the collection of Song Yu still have some diaphragm. Now he has completely brought himself into the role of a master. To be honest, no one can refuse this little guy. Hey, hey, don't hold it. Oh, I'll go. Does this guy need to be so honest. Let him hold his breath just let him not to smell the smell around, did not expect him to hold back all the time, the little face is red, not to mention, the body began to smoke. I almost let myself out of breath. If she hadn't reacted, she would have been the first person to suffocate herself to death. Song Yu opened his eyes, the corner of his eyes still hung with tears, the expression on his face was very aggrieved, Cantilever Storage rack , and did not dare to look at Donghua Yufan, lowered his head and began to silently shed tears. Donghua Yufan helplessly covered his forehead and began to cry again. Wasn't he really born in the wrong womb? He should be reincarnated into a girl. Just as Donghua Yufan was thinking of saying something to comfort him, suddenly he raised his head slightly and cried. Seemingly feeling that he was crying out, Song Yu raised his head in horror and looked at Donghua Yufan, his eyes red, like an injured deer. This expression really made her feel pity. Donghua Yufan sighed, Song Yu is a pumping, after that is to maintain a fear but to try to suppress the voice of crying out. But the more you press, the louder you cry. Donghua Yufan was afraid to take a picture of the girl Tao Yaya, so he quickly set up a sound insulation. If Tao Yaya knew that Song Yu was crying, she wouldn't know how to blame herself. In this way, Donghua Yufan really felt that his master had failed. One did not treat himself as a master, and the other was afraid of himself to death. All right, be good and don't cry. Shifu doesn't blame you. Donghua Yufan could only clumsily come forward and slip him out, quickly dispersing the water on his body. He held his small body in his arms and patted his back gently with his hand. To tell you the truth, she didn't even get married. She really didn't know how to coax a child. Peach Yaya used to be thrown to Han Xi, and then she finally picked up a ready-made one. Now she really feels that if she accepts apprentices in the future, she will never raise herself. Mom, I'm really annoyed. Perhaps because this period of time Donghua Yufan has been lukewarm to him, although Song Yu did not show on the surface, but the heart should be very afraid of being driven out. Otherwise also won't be so careful, compare Hao Yingjun to know how afraid Song Yu is. Hao Yingjun dared to ask her for something directly, but Song Yu would cry and shiver even when she saw her expression. So now by Donghua Yufan such a coax, Song Yu instead cried more severely, as if to vent all the grievances of this period of time. She can even feel the chest seems to have been wet, Nima, not to say that women are made of water, why this guy can cry so much. Although the cry is not loud, but this feeling is really weak, and can not be fierce to him, can only continue to coax. Don't cry. Be good. Shifu likes you best. Don't cry. I don't know which one of the words she said touched him. Sure enough, Song Yu's cry was much smaller, and even her sobs were much more gentle. Wait until Song Yu finally eased down, Donghua Yufan actually has a very tired feeling, this kind of fatigue is a feeling that has not been felt for a long time. Even if she played with others for a few days and nights, she would not feel tired, but dealing with a crying kid would be so tired. I won't have a baby after I kill her. It seems that it may not be born in the future. Alas, mom, it turns out that she has come together with infertility unconsciously. After coaxing Song Yu, Donghua Yufan hurriedly looked at the other three, Yu Rongxuan and Liu yuanchun had woken up, and the two children were still at a loss, in a state of confusion. Donghua Yufan took the prepared robe to Song Yu and let him put it on. Song Yu sniffed and blushed. When he took the clothes, he also took a look at Donghua Yufan. Seemed to see the smile on the face of Donghua Yufan, finally curved the corners of his mouth. This smile is really breathtaking. Ma Liu Yu Rong Xuan and Liu yuanchun slip out, the water has been very cold, thanks to the body there is a layer of things. After cleaning up the filth on their bodies, they also dispersed the water on their bodies and breathed a sigh of relief. omracking.com

Jiang Yu Moyun Xuangong inhales the true fire of the sun into his body as much as possible, so that it can be stored in every cell. The extremely weak line of the sun in his Dantian, the flame of the true fire, was burning, and in an instant it grew to tens of thousands of times its previous size. Jiang Yu knew in his heart that there was no other place in the world where there was so much sun and fire for him to absorb, and that Kunlun Mountain was not a place where everyone could go in and out at will. This time, he wanted to use the power of the true fire of the sun to help him understand some wonderful methods. The power of the flame is indescribable, and the fairy breath transformed by the purple air beads has greatly benefited the river fish. In a trance, the river fish right hand toward the outside, five fiery red arrows gas into the sky, the hot air forced Feng Yu a claw to grab Xuan eight turtles, repeatedly back dozens of feet. Mochizuki Zong'C Rocket Gas', no, now it should be'Sun Arrow Gas' which is cultivated to the realm of Dacheng by Jiangyu in a very short time with the help of the power of the sun's true fire, and the five arrow gases are almost condensed into crystal-like entities. The huge true fire of the sun is improving the constitution of the river fish, so that he and Zhenyuan are filled with the violent power of the true fire of the sun. And that kunpeng a feather sword contains a little bit too green fire, that line of flame even if the power is great,Industrial pallet rack, in quantity is still too little, for some high-end magic weapon simply can not pose too much threat. But now the weight of the sun's true fire in the body of the river fish, but to a shocking point, purely in terms of the true fire that the river fish can start, he can refine a mountain. Although the true fire of the sun in the body is too strong, it greatly hinders the understanding and cultivation of other attributes of the arrow gas of the river fish, but what does it matter? This almost condensed into the essence of the sun arrow gas,heavy duty warehouse rack, enough to destroy all the enemies, but the river fish does not care about their other attributes of all kinds of arrow gas can be trained to a profound realm. All the laws in the world can be learned from the strongest one. The kindling of the true fire of the sun in Tiangong Hall was taken from the core of the sun star by the Queen Mother of the West with great magic power in the past, which was beyond the imagination of monks. The river fish took the initiative to absorb the fire, so that great energy rushed into his body, and even alarmed the strange wooden bow in his Dantian. Like a greedy crocodile, the wooden bow, which was as rough as firewood, formed a black hole of energy in the body of the river fish, devouring countless solar fires. Only a very short moment, the river fish suddenly felt that the wooden bow that had been sleeping moved slightly, a very desolate ancient breath rushed out from the wooden bow, instantly surging all over the body of the river fish. The river fish in the body of another handle'Sirius bow '' buzz 'a lament, Pallet rack beams ,pipe cantilever rack, by the desolate ancient breath shock flew out of the body, very innocent around the river fish circled up. The river fish suddenly realized that he was already qualified to use the wooden bow-although it was brought to him by the fire outside-but he was already able to summon the bow. Only three snap fingers of a very short time, the river fish standing under the dragon-shaped spout of the sun true fire kindling was sucked clean by the wooden bow, the other two sun true fire kindling is to take the initiative to spray the flame to the river fish, all the energy into the river fish body. Feng Yu on the side has already exclaimed: "Have you made a mistake?"? How could he, his bow, be on you? Whoo, what a terrible bow! What a terrible bow! Feng Yu seemed to think of something that shocked her, and looked at the river fish's face with a bit of fear. Xuan Ba Gui rolled his eyes and woke up. He looked at the river fish, nodded repeatedly and said, "So that's it. Is it the heir of that guy?"? In that case, this little fellow is also a person who refuses to read. Hum, when he came to the Kunlun Mountains to ask for medicine, he went all over the palace, but he didn't come to my study. He really didn't give me any face. Xuan Ba Gui bit the whiskers around his mouth angrily. It took only one cup of tea for the river fish to absorb three suns, but he has already changed dramatically. At the same time, he got a message from someone in the kindling. Yes, it is the master of Kunlun Mountain, one of the leaders of ancient gods and immortals, the famous Queen Mother of the West who left him a message. The real Avatar, tens of thousands of years away, still smoothly sent the message she left to the person who should receive it. It was a business agreement in today's terms. But the river fish did not hesitate to put the agreement behind him, he muttered: "You are not sure to do things, why should I work hard?"? The splendor and wealth in the world of mortals is the greatest pursuit of my river fish. You promised me so many benefits, but how can I have the power to do that? As you said, you are only 10% sure of the secret you calculated, so why should I work hard for these illusory things? Besides, to offend so many people? Just shaking his head, Jiang Yu decided to bury the agreement in the depths of his heart and never make it public, and then he immediately selectively forgot about it. He only had a great interest in the information left by the Queen Mother of the West about some of the facilities of Tiangong Hall. Thousands of mysterious seals came out one by one from the extremely unfamiliar hands of the river fish, and a flash of inspiration shot into every corner of the Tiangong Hall. Accompanied by a faint sound of thunder, 360, no, now 357 flaming spouts spewed a fire dragon toward the top, and a huge casting furnace rose from the center of the Tiangong Hall. Anvils, sledgehammers, bellows, stoves, all flashed with purple and golden noble and mysterious light, and the subtle and almost invisible mysterious amulets all over the body covered this set of household goods,Warehouse storage racks, which made this set of household goods, which looked no different from the facilities of the blacksmith shop in the world, full of luxurious and supreme atmosphere. omracking.com

Out of the hotel, Ye Tian's expression is not as helpless and angry as in the room, for today's things, although not satisfactory. But with more than one million RMB of information in his arms, Ye Tian was very satisfied. Whether it is a swindler of Jiang Xiangpai or a geomancer like Ye Tian, the most taboo word is the same, that is, the word "greed". Ye Tian, who had said to Long Xuelian that the price of broken charms was still somewhat angry, now no longer cares. Think of oneself just can refuse tens of millions of wealth of y yòuhuò, but is in the small hundreds of thousands on the mind … Ye Tian could not help laughing, and then again, he may not have no chance to earn tens of millions of yuan. What does a geomancer depend on for a living? Nature is to give people geomantic omen, fortune telling … But changes person's numerology, itself is one of service items, helps Tang Xuexue to dissolve nine y yīn absolutely pulse, also does not have Ye Tian to say such alarmist. Li Shanyuan was punished by heaven for changing his life, because Li Shanyuan's Yangshou had been exhausted, which was tantamount to taking away two years of life from the way of heaven. This means was not to disturb the secret of heaven, but to change the operation of the way of heaven. Of course, the consequences were extremely serious. But Tang Xuexue's matter is not the case, when Ye Tian deduces the numerology for her. She found that her Yangshou was not over, and she was destined to have the help of a noble person to help her dissolve the nine yyīn veins, and she would not suffer the same vitality as last time. So Ye Tian opened his mouth and agreed to come down, otherwise, not to mention that he had no friendship with Tang Wenyuan, he had helped his Wei Hongjun find his head many times. Ye Tian will not act rashly,Drive in racking system, all day long to help people to avoid disaster, Ye Tian can not understand this truth? After Ye Tian received the patriarch's inheritance, his understanding of the art has gone far beyond Lao Dao's understanding of the art. As long as he can break through the existing skills, many of them are anti-heaven means in Lao Dao's eyes, but they are easy for Ye Tian to do. When the time comes, should we collect 50 million or 100 million? Thinking of Tang Wenyuan's generosity, Ye Tian could not help but feel a little itchy in his heart. In his eyes, Mr. Tang was a super fat sheep. He was willing to pay tens of millions of yuan for a magic weapon. He helped his granddaughter cure the disease by himself. The old man didn't know what kind of handwriting he would take out. Taxi, damn it, calm down. Ye Tian,long span shelving, who was fantasizing, suddenly found that a car parked in front of him had forgotten to get on, and was robbed by others first, and could not help laughing. Hey, Ye Tian, wait for me. When Ye Tian was about to reach out to call the second car to come, there was a cry behind him, "Ye Tian, where are you going?"? I'll drive you. Ye Tian looked back and saw that it was Hu Jun. He said with a smile, "Brother Hu, I'll go to the bank and go home. Don't bother you.." Hu Jun grabbed Ye Tian and said with a smile, "It's all right. I'm just looking for you to talk about. There are some things that are quite sleepy during this period. I'd like to ask Master Ye to give me some advice." "What master ah, call my name, Hu Ge, then take me to the bank first, watching Hu Jun's car was driven in front of the hotel, Ye Tian did not refuse to open the door and sit on it.". Handing a tip to the doorman, Hu Jun sat in the driving seat. He grew up in 49 cities. Although he had been away for many years, he was familiar with the road. After the car drove away from the hotel, radio shuttle racking ,Narrow aisle rack, Ye Tian sat in the passenger seat and asked, "Brother Hu, do you have something on your mind?" From Hu Jun's physiognomy, Ye Tian could see that he was miserable in his childhood, but when he was in his twenties, his fortune changed, and when he reached middle age, he was even richer. But now Hu Jun is encountering a threshold in his life. If he chooses the right one, he will soar to the sky, but if he chooses the wrong one, he will be dormant for a few more years. After hearing Ye Tian's words, Hu Jun's face was slightly stunned, but the driving hand was still very steady, presumably also right, if Ye Tian did not have some real talent and learning, Tang Wenyuan would not have such an attitude towards him. Although this is not the time to talk, but since Ye Tian started the conversation, Hu Jun also asked along, "Ye Tian, my foundation is in the northeast, now the cause is also there, but the elders in the family recently came to Beijing to develop, you say." Shall I come with you? Hu Jun's grandfather was a meritorious general at the time of the founding of the People's Republic of China, but he was so shocked by the turmoil that he died in the 1970s. Hu Jun's father was also sent to the army in the northeast in the mid-1970s because of his grandfather. Hu Jun, who spent his childhood in Beijing, suffered a lot with his father at that time. However, Hu Jun's father's life was extremely tough. Relying on his own ability and the help of some elders who came back later, he took one step at a time in the army. In a short period of 30 years, his rank was equal to that of his deceased father. Hu Jun, who has been used to political strife since childhood, is no longer willing to enter politics. With his father as a big tree, his business in the Northeast is doing very well, but recently a transfer order transferred his father to Beijing. In this way, Hu Jun has to make a choice, is to follow his father to Beijing, or stay in the northeast to continue to develop? A lot of business in the northeast is developing, Hu Jun this walk, is bound to be affected, but into Beijing development, the prospects are broader, of course, the environment is relatively complex, there are advantages and disadvantages between the two, Hu Jun can not make up his mind for a while. Just sent a small high money into said is to see a master, Hu Jun idle to have nothing to do, also followed, but did not want to actually open their eyes, know Ye Tian. After hearing Hu Jun's words, Ye Tian hesitated for a moment and opened his mouth and said, "Brother Hu, there is an old saying that I don't know if you have ever heard of it. That is to say, people move to live and trees move to die!" "Of course I have, Ye Tian, are you suggesting that I come over?" As soon as Hu Jun heard Ye Tian's words, he understood what he meant. Ha ha, Hu Ge, the meaning of this sentence, in fact, the moral is very deep, and even it said that it is not a matter of people moving and trees moving,Narrow aisle rack, it said that people want to be invincible for a long time, it is necessary to continue to develop, can not remain unchanged forever. 。 omracking.com

"It's still about the trial production of the D-type spray gun. The other side said that the problem had been solved and wanted you to go back and have a look.". It is said that they have used a new ruler, so it is better to ask for their design drawings. Of course, if Heisuke is very busy, let someone else go. No, I'll go. I also want to hear the details. "That's right. It would be nice if you would go.". I'll contact them later. Kosaka breathed a sigh of relief. Then he seemed to think of something and smiled slyly. As a result, the boss's face turned into an intimate uncle's face in an instant. Tell you a great thing. "A great thing?" "Yes, a thirty-five-year-old, one year younger than your dead wife, and still unmarried.". I've seen her picture, and I feel serious and good. When he realized what he was talking about, Ping Jie shook his head and waved his hand. I haven't thought about it at all. "I know this, the other side has not considered it, so this kind of thing is to rely on the people around the matchmaking.". Anyway, let's talk about it after seeing the top. "No, no, it's too early anyway." "Is it?"? If Heisuke really thinks so,Pallet rack supplier, I won't force you. But, "said Kosaka to Heisuke's ear," can you stand it there? You should be suffocating, right? " Heisuke certainly understood where he was referring to. Ah? Ah, it's okay. I don't feel that way at all. Really, I'm not in that mood right now. "Is it?"? It's hard to believe. Kosaka cocked his head with a skeptical expression. So,Steel racking system, I'm going to the Tanaka factory. Then Heisuke ran away from Kosaka. Heisuke borrowed a public car from the company and drove to Tanaka. He likes to go to other factories or subordinate companies. To be precise, what he likes is the time on the road. Always doing the same thing in the same place with the same group of people for a long time. Sometimes there is a feeling of being abandoned by the world. At times like this, even a few minutes outside the company can help him figure out where he is again. It took just over an hour to complete the task at the Tanabata studio. This time, there is no problem, but the previous problem has been solved. He came only to listen to their reports, so he was very relaxed. A young man in charge of the problem on the other side also looked very proud. After the meeting, Heisuke came to the winding workshop as he had done last time. He remembered that Naoko had said that Seiko Sakagawa had called him. However, in that row of female employees did not find the figure of Zhengzi. Heisuke came to the place where the man who looked like the person in charge was sitting. On the table in front of him stood a card with the words "Director" on it. Although his face is a little angular, his eyes are very kind. He must have taken good care of his female employees. Excuse me, is Sakagawa Seiko in? "Oh, she hasn't been here lately." Hearing Pingjie's question, warehouse rack manufacturer ,heavy duty racking system, the director immediately answered, "She said she was not feeling well.". We're worried about her, too. "Are you in hospital?" "Well, I haven't heard of it." The director tilted his head and asked, "What are you looking for her for?" "Ah, we know each other. We just wanted to stop by and see her." Then Heisuke thanked the director and left the workshop. In front of his eyes, he saw the thin body and pale face of Sakagawa Seiko. She must have pushed herself too hard. In addition, she must face the cold eyes of public opinion. Heisuke's ears echoed with the grim voice of the harassing phone call. Why did she call me? The more Heisuke thought about it, the more he cared. Out of the factory, Heisuke got in the car. He started the engine and was about to shift the manual gear lever into low gear when he found the traffic map in the inside pocket of the door. Taking out the map, he turned to the page of the enlarged map of the western part of Tokyo. Zhengzi's home in Chobu is only a short distance away from here. He looked at his watch. It was just after 11 a.m. Even if I rush back to the company now, it's time for lunch break. He put the car into gear and started it slowly. He had taken a taxi to see her off before, so he quickly remembered how to get there. Before arriving at the impressive apartment, he parked his car on the side of the road. Up the steps, he found the door with the nameplate "Sakagawa" and answered the doorbell. There is no internal telephone at the door. Seeing no response, Heisuke was about to press it again when a reply came from inside the door, "Coming-" It's her daughter's voice. If I remember correctly, her name should be Yimei. Excuse me, my name is Sugita. The door opened a crack and was still chained inside. Through the crack of the door, you can see the slightly nervous Yimei's face inside. Hello! Is your mother at home? Hearing Heisuke's question, she said, "Please wait a minute," and then closed the door. Soon there was the sound of unlocking the chains. I guess she went in to inform her mother of Heisuke's arrival. Please come in. Itsumi welcomed Heisuke into the room with a stiff expression. Excuse me. At the same time as Heisuke took off his shoes, the sliding door inside opened. The haggard Seiko Sakagawa appeared in front of him with an expression of smile and surprise. She was wearing a long dress of the same texture as the towel. Mr. Sugita, what are you doing here? "I've just been to the Tanabata Workshop, and I came by to have a look.". You called me last night? Unfortunately, I don't know your home phone number, so I took the liberty to visit you today. "So that's it.". I also got a list when I attended the meeting of the families of the victims, so I knew your home phone number. "I see." Heisuke nodded, "by the way, did you ask for leave from the company?" "Well, I haven't been feeling well lately, so." Ah, come in quickly. I'll get you something cold to drink. "No, don't bother.". Let's talk about what you want to say on the phone first. Heisuke went straight to the point. Before he came, he had promised himself that he would never go inside today. Probably aware that Heisuke did not want to talk about other topics casually, Sakagawa Seiko did not say anything further. She lowered her head,Pallet rack upright, then said, "Wait a minute," and disappeared into the Japanese-style room again. omracking.com

Originally published as What's the difference between N95 and KN95 masks? Can they all be used for medical protection? An epidemic has made almost everyone aware of the various standards of masks, the most popular of which are N95 and KN95. What is the difference between N95 and KN95? Can these two standard masks be used for first-line medical protection? Let's take a look at the answer in this article. 1. Is there any difference between KN95 and N95 mask? N95 is the certification grade for respirators in the United States and is certified by the National Institute for Occupational Safety and Health (NIOSH). This kind of mask can filter out more than 95% of non-oily particles (aerosols) under the condition of specified airflow (85L/min), so it is named N95. If it can filter more than 99% of particulate matter (aerosol), it is called N99 mask. In addition, corresponding to N95, KN95 is a mask certified by China's GB2626-2006 Respiratory Protective Equipment Self-priming Filter Particulate Respirator Standard. KN95 has the same level of protection as N95 mask, but it follows the test standards of different countries. KN95 masks follow Chinese standards and N95 mask follow American standards, both of which have a protective efficiency of no less than 95% against non-oily particles (sodium chloride particles for experiments). 2. Can KN95 mask be used for first-line protection? KN95 respirators and N95 mask include both medical and non-medical types. Among them, KN95/N95 mask masks with "medical" logo can be used for first-line protection of medical staff during the anti-epidemic period, masks without "medical" logo are not recommended for medical staff, ordinary people can use them. Masks conforming to GB19083 above Grade 1 can not only achieve 95% filtration, but also prevent liquid penetration,Medical Disposable Coverall, and can be used for various operations in medical institutions. 3. Why is KN95/N95 mask anti-virus? Viruses usually do not exist in the air alone, but are attached to particles such as droplets, dust and dander. The filtering mechanism of KN95 and N95 mask is to block these fine particles through the high-performance filter layer in the mask to build a protective barrier. Therefore, when wearing KN95/N95 respirators, namely self-priming filter particulate respirator masks, attention should be paid to the tightness, KN95 Face Mask with Five Layers ,Medical Disposable Coverall, which should be close to the face, and never leave a "convenient door" for viruses and bacteria. It is recommended to use masks with "exhalation valves" with caution. 4. What is the difference between medical and non-medical masks in KN95/N95 mask? The main difference is that the outer surface of the medical mask is hydrophobic, while the surgical mask of GB19083-2010 and YY0469-2011 clearly put forward the requirement of "synthetic blood penetration" and the parameter index of "surface moisture resistance", which clearly define the protective effect of medical protective masks on blood, body fluids and other liquids. Generally speaking, just like a drop of water falling on a lotus leaf, the liquid cannot be soaked on the surface of the mask, which can block alcohol, blood and the like frequently touched by medical staff and prevent the rapid penetration of the alcohol and the blood; and a non-medical type KN95/N95 mask is not subjected to the special treatment. The filter layer of KN95 and N95 protective masks has the most protective function. The filter layer is made of polypropylene melt-blown superfine fiber electret material. The outer surface of the mask has not been hydrophobic treated. When it comes into contact with water and alcohol, the structure of the material will be destroyed and the filtering effect will be greatly reduced. Moreover, blood often contains bacteria, viruses and so on, and the application scenarios of hospitals determine that medical staff are likely to be exposed to the blood environment of patients. Therefore, hydrophobic treatment on the surface of medical masks is indispensable. Ordinary people are not likely to encounter alcohol and blood, as long as they change their masks regularly, it is not harmful to their outside without this treatment. 5. What is the protective effect of KN95/N95 mask with breather valve? KN95/N95 mask is also divided into breather valve and non-breather valve. For masks, permeability and filtering efficiency are always a pair of contradictions, if the filtering effect is good, they often feel more suffocating. Breathing valves are designed to relieve breath-holding. The exhalation valve and the inhalation valve are a mechanical switch, the valve is closed when inhaling and opened when exhaling, the air is "screened" by the filter layer, and the valve is opened when exhaling to reduce the sense of resistance. The problem is that it is not clear whether the mechanical switch will suddenly break down when worn,Full Body Disposable Coverall, or whether it will be stuck by fine particles, allowing harmful particles carried by air that have not passed through the filter layer to enter. Therefore, medical masks do not have breathing valves. Return to Sohu to see more Responsible Editor:. zjyuan-group.com