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Feb 13, 2019& 0183;& 32;Use Puraka's Particulate Mask Calculator to visualize how the type of filter N95, N99, P100, and PM 2.5 and "fit factor" impact filtration efficiency. When you select "Fitted Masks" or "Non-fitted Mask", we assume you are using a cloth face mask with a disposable pm2.5 filter manufactured to the standard selected.【Get Price】

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Dec 12, 2020& 0183;& 32;Thailand’s Pollution Control Department PCD has urged Bangkok residents to brace for a rise in hazardous PM2.5 dust levels this weekend. The surge of PM2.5 is caused by climate patterns, particularly the current lack of air circulation to disperse the particles, Atthapol Charoenchansa, director-general of the PCD told media. “So from today until Sunday, air … 【Get Price】 earloop masks

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Reusable washable anti-haze pure color printed cotton dust mask. 100% pure cotton custom washing and filtering mask, prevent dust, fog and haze and some other airborne dust particles. Pr. US$ 0.22 - 0.49 / Piece. 1000 Pieces Min. Order Freight Cost Available【Get Price】