1, check the box above whether the certificate of conformity number is printed, whether it is affixed with a scannable bar code, the mask bag whether there is a steel printing of the date of production / expiration date, if there is no is a fake.

2, in the Drug Administration and Quality Supervision Bureau of the official website of the company to check whether the record is successful, whether the quality of testing, if there is no record of the quality of testing is fake.

3, check the mask packaging, see whether the packaging is clearly written on the manufacturing company, supervisory unit, production address, production license number and other details, if there is no such, is fake.　

Note:

1, be sure to compare the FDA filed the name of the product and whether the ingredients are the same

2, to check whether the box above the registered trademark? , as well as the food safety mark QS