FAQ - Mask

What is a KN95 mask?

KN95 is an industry standard and means that the mask provides the intended effectiveness of filtering 95 percent of particles with a mass median diameter of 0.3 micrometers.

Therefore, our mask can protect you well from PM10, PM2. 5, and even smaller particles.

What is the difference between KN95 and N95? 

KN95 is one of the levels specified in the Chinese Standard GB2626-2006.

N95 is one of the grades specified in 42 CFR 84.

The technical requirements and test methods of these two levels are basically the same.

are the filtration efficiency reached 95% under the corresponding standard.

How to use and wear the mask?


  • Before putting on a mask, clean hands with alcohol-based hand rub or soap and water.
  • Cover mouth and nose with the mask and make sure there are no gaps between your face and the mask.
  • Avoid touching the mask while using it; if you do, clean your hands with alcohol-based hand rub or soap and water.
  • To remove the mask: remove it from behind (do not touch the front of the mask). If you are using a reusable mask wipe the filter with a tissue and place it in a storage pouch; clean hands with alcohol-based hand rub or soap and water.

Source: World Health Organization

How long can a KN95 mask be used? 

Some researchers have studied the protective efficiency and wearing time of N95 medical masks. The results show that the filtration efficiency remains above 95% N95 wearing the masks for 2 days, and the respiratory resistance changes little, and the filtration efficiency decreases to 94.7% for 3 days.

Wash your hands! Even if the virus is left in hand, hand washing can block the virus through the hand into the body.

How long can a KN95 mask be used? 

Nowadays, there is no clear conclusion about the best wearing time of N95 masks abroad, including WHO, and there is no relevant regulation on the use time of masks in China.

Some researchers have studied the protective efficiency and wearing time of N95 medical masks. The results show that the filtration efficiency remains above 95% N95 wearing the masks for 2 days, and the respiratory resistance changes little, and the filtration efficiency decreases to 94.7% for 3 days.

a suggestion from the us CDC is that in the absence of adequate supply of masks, reuse may be considered as long as the equipment is not visibly soiled or damaged (e.g. creased or torn).

Where are the masks made?

The masks are made in Shenzhen, China.

How long will I receive my package if I order today?

We process orders within 24 hours and shipping to delivery time is 5-9 business days.