[Disassembly of airtight masks]Yuan Guoyong inspects today’s Laguna City N95 masks with duck Tsui Hong Kong mask factory also promotes similar masks-Hong Kong Economic Times-SMEs-Industry Headlines

Professor Yuan Guoyong of the Department of Microbiology of the University of Hong Kong visited Renshi Tower, Kingway Plaza and Laguna City earlier. They all wore duckbill-style N95 masks, which aroused many discussions among netizens.

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Earlier, Yuan Guoyong only wore his usual white surgical mask before entering Renshilou for inspection, but when he came out to meet with reporters, he changed to an orange duckbill-style N95 mask. Later, in response to media enquiries, he explained that when the temperature is lower than 15 degrees Celsius and 40% humidity, aerosol (Aerosol) will stay in the air for a long time and remain infectious. Because he was worried about the risk of infection in the building, he put on the N95 mask before entering the building.

In addition, when Yuan Guoyong visited Kingway Plaza, which also had the risk of vertical transmission, he also wore the same high-resistance mask. A total of 5 units and 10 people in Kingway Plaza were infected (Click here for details). After the inspection, Professor Yuan stated that the pipes of the building might have a chimney effect. He pointed out that all units in Block C of the building should be evacuated.

Today, Yuan Guoyong went to Block 5 of Laguna City to learn about him. He also came to the scene wearing an N95 high-resistance mask. He pointed out that after investigation, it was found that the U-shaped traps of some units were not filled with water, and vertical transmission cannot be ruled out. For safety reasons, the residents of Room E of the whole building must evacuate. He also mentioned that 4 of the 10 infected residents this time are foreign domestic helpers. It is believed that they need to do housework and cleaning, including kitchens and toilets.

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The same Halyard FLUIDSHIELD Surgical N95 Respirator Mask is very common in foreign medical care circles, but it is rare in Hong Kong. It is an N95 mask with FDA and NIOSH certification, and can be used in ultra-high-risk environments in foreign medical situations. The duckbill design can provide a larger air contact surface, allowing users to breathe more smoothly. Currently, the online price is about more than $20, and the price reached $100 at the peak of last year. This mask is airtight, so it is called “Respirator Mask”. Unlike general surgical masks, it can prevent gas from directly entering the respiratory system. It must be filtered before entering.Details of mask protection level are availableClick here to browse。

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In fact, a Hong Kong mask factory, Saniaid, also introduced similar N95 masks, but the “duckbill” is shorter in length. This mask supports N95 and NIOSH certification, NaCI (0.075μm) filtration efficiency: ≧ 95%, exhalation resistance: 6.6mmH2O, and it is made in Japan. This mask was sold as low as $400/50 (Click here for previous reports)。

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Pay attention to the risks when buying masks, especially paying first. Buyers need to check clearly with the store to understand the delivery time of the masks, the quality and authenticity of the masks, and to measure the risk of purchase before they can pay to avoid financial losses. It is recommended to pay in person and check the mask on the spot. This website reports pure content and will not be responsible for transactions between buyers and sellers.

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