Question 1

I'll be more specific- do the masks have 'gb2626-2019' stamped on the actual masks?  yes or no please?

Accepted Answer

GB2626-2019 is printed directly on the box and certificate of conformity. It will be adjusted and printed directly on the mask later.

Question 2

for about how long can i wear one of these?

Accepted Answer

I would avoid this brand, often more than half of the masks in the box are defective and the straps break immediately. When you do find a random one that holds together they are comfortable to wear for a whole day of work though.

Question 3

Is this mask niosh approved?

Accepted Answer

Executive summary:  most KN95 masks are a step up from cloth.  But not as protective as FDA approved N95 masks.  
For Details, search for "amazon/about kn95 masks". Should take you to an Amazon "Help & Customer Service" page with an nice article "About KN95 Masks".  
The summary is that NO KN95 masks are officially NIOSH approved. However, the CDC did commission some type testing on hundreds of KN95 models to see how close the test articles came to 95% or better particle filtration.  It was hard to find these HUHETA KN95 masks because the model names are not precise.  But the HUHETA "Protection Mask" model did not do well in testing:  only filtering about 65% of particles.  And the big problem with the KN95 Chinese "standard" is that there is no transparent oversight of the KN95 manufactures to ensure that they are producing masks IDENTICAL to the models that were submitted for type testing.  My advice:  pay extra and buy FDA approved N95 masks.  The FDA inspects the N95 factories where ever they are in the world and ensures that manufactures are not altering the originally tested and approved design.

Question 4

Can my baby use this product a lot?

Accepted Answer

I believe this product is too big for a baby.  Masks or any face coverings should not be placed on children younger than 2 years of age.

ASIN	B08NGK1H5H
ASTM Fluid Rating	ASTM Level 1 (Low)
Age Range Description	Adult, Kids
Best Sellers Rank	#29,157 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #151 in Disposable Respirator Safety Masks
Brand Name	HUHETA
Closure Type	Ear Loop
Color	Deep Black
Customer Reviews	4.6 4.6 out of 5 stars (12,168)
Filter Class	KN95
Fit Type	Snug
Item Package Quantity	1
Item Weight	5.92 ounces
Manufacturer	Guangdong Nuokang Medical Technology Co., Ltd
Material	Cotton
Number of Items	20
Part Number	mei9000gehu1818
Pattern	Solid
Ply Rating	5 ply
Product Style	Classic, Fashion
Reusability	Disposable
Size	1 Count (Pack of 20)
Special Features	Lightweight
Style Number	NuoK-9501
Theme	Car
Unit Count	20 Count

HUHETA KN95 Face Mask 20 Packs, 5 Layer Safety Mask with Elastic Ear Loop and Nose Bridge Clip, Filter Efficiency Over 95%, Protective Masks for Indoor and Outdoor Use (Black Mask)

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