Zhou Liang's mask @zhouliang_mask
Dedicating one lifetime to crafting one type of mask. Joined March 2024-
Tweets313
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Followers1K
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Following67
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A user just sent me the data of testing ZIMI 9541 mask with TSI 8020. The FIT score changes after wearing for 3 days and 6 days. The mask was worn for 10 hours a day, and the mask was taken off and put on about 6-7 times a day. The average AQI of the air environment was 71, and…
I don’t know if other airlines will follow suit (cancel the requirement to wear masks on airplanes). I know that I can wear masks with breathing valves on airplanes in the future, because masks with breathing valves were not allowed when flying in China before.
Theoretically, the 03 version of the children's mask will have a better fit due to the change in the hole position. From the GB2626-2019 test report, it can be seen that the maximum leakage of the 95S-03 head-mounted mask is 1.9% (tested by 10 people). GB2626 leakage is a…
Everyone is welcome to test. We have too many models. Many people suggest that we launch more different options. Therefore, we are under great pressure to manufacture. The mask in the picture above is not ONE, but the non-sale 9530. It can only be obtained in last year's event.…
Everyone is welcome to test. We have too many models. Many people suggest that we launch more different options. Therefore, we are under great pressure to manufacture. The mask in the picture above is not ONE, but the non-sale 9530. It can only be obtained in last year's event.…
Technological progress of masks. It is not only necessary to see who has a better fit (related to the structure of the mask) and who has a higher filtration efficiency (at the same level), but also the performance of the filter material. Under the same level/filtration efficiency…
On the third day of the Shanghai Labor Protection Exhibition, I was hired again thanks to the industry's recognition. The purpose of the visit these days was mainly to understand the market, see new products, and discuss the formulation and testing methods of mask standards with…
On the second day of the Shanghai Labor Protection Exhibition, I visited the Labor Protection Exhibition as a visitor for the first time in my many years of working in the industry.
I like to study masks. I have published a lot of research content related to masks on Zhihu. If you are interested, you can take a look. I am considering posting these research contents on reddit.
I like to study masks. I have published a lot of research content related to masks on Zhihu. If you are interested, you can take a look. I am considering posting these research contents on reddit.
This is the first time I saw a photo of our ZIMI standalone package on Twitter. If you buy their air purifier in China.@Engineer_Wong. you will get a ZIMI mask for free.
This is the first time I saw a photo of our ZIMI standalone package on Twitter. If you buy their air purifier in China.@Engineer_Wong. you will get a ZIMI mask for free.
It is expected that the ZIMI AliExpress store will be officially launched around May 10, and this newly designed sticker will be sold at the same time, which can help friends with strong hands-on ability to find a more comfortable and fitting way to wear it. It should be noted…
Yesterday, a Chinese user tested the ZIMI mask and sent me the data. 7 test items (normal breathing, deep breathing, shaking head left and right, nodding up and down, talking, bending over, normal breathing) test concentration 16000, test equipment 8020. Among them, ZM100 is…
The workload has been a bit heavy these days. Two friends sent me masks and asked me to help them test the FIT and real-person inhalation resistance. I like to study masks very much. We have a lot of mask test data. I am a mask designer and researcher, because only by constantly…
The weight of the frame mask, in the picture: 95W earloop, 95S headloop, 9541 headloop, 9233 headloop, ZM100 headloop, ONE headloop, 7711 valve earloop, 9541 valve earloop, 8210 valve headloop. Unit, grams. The maximum weight is less than 20g, and the minimum weight is 7.7g.
We sincerely invite you to test your blood oxygen level after wearing a mask. We will not discuss the impact of decreased blood oxygen. Everyone's body is different. We are a group of people who wear masks. Some people will say that you are doing this for commercial purposes.…
The criteria for a good mask in my mind are: 1) high filtration efficiency + good sealing structure = high FIT; 2) small exhalation resistance + small inhalation resistance (inhalation resistance after putting on the mask); 3) reducing the dead space volume and reducing the…
ZIMI 8210. Test video of sticking sponge strip on the nose bridge of the frame.
How to improve the fit of ZIMI masks.
Yes, facial hair will affect the fit according to NIOSH guidelines, but cloth and silicone have different tolerances for facial hair. If you have a test device, you will notice the difference.
Yes, facial hair will affect the fit according to NIOSH guidelines, but cloth and silicone have different tolerances for facial hair. If you have a test device, you will notice the difference. https://t.co/kLcveHF4HQ
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