Shanghai Yuanqin Purification Technology Co., LTD Direct Authorized Distributor YICHITA YQD8008 is CDC NIOSH Approved N95 mask for at least 95 percent filtration efficiency against certain non-oil-based particles.NIOSH approval number is TC-84A-9245. Commonly used in the following industries: Commercial Buildings, Construction, Design & Construction, Food Processing, Food Safety, General Manufacturing, Heavy Infrastructure, Mining, Oil & Gas, Transportation.