The mask for Yuniu is of good quality, packaged independently, very sanitary, and has no peculiar smell except the activated carbon layer, and the packaging is also very good. The filtering effect is good.

Yuniu mask is an n95 mask developed by Henan Zhanbin Medical Device Trading Co., Ltd.. The company was established on September 16th, 22, and registered in Fengtan Village, Gaoping Town, hua county, Anyang City, Henan Province. Its business scope includes wholesale and retail: Class I, Class II and Class III medical devices, daily necessities, hardware and electrical appliances, office supplies, electronic products, disinfection supplies, general labor insurance supplies, computers and software, laboratory equipment, packaging printed materials, health care products, medical models, etc.