900 1V has two kinds of packaging, single packaging and environmental protection packaging. You should buy environmentally friendly clothes.

If you doubt the authenticity of the product, you can identify it by the following methods:

1, please pay attention to the anti-counterfeiting label on the package: the anti-counterfeiting label is used on the package of the 3M protective mask, which can help to judge the authenticity. You can identify it by the security label at the seal of the outer packaging box.

Identification method: when the line of sight is perpendicular to the label, the label is colorless; When the line of sight is inclined to the label at a certain angle, the label will change from colorless to blue-green.

2. Or send the sample to the following address: No.222, Tianlin Road, Xuhui District, Shanghai, and the personal safety protection products department of 3M China Co., Ltd. will verify the authenticity.

I hope the above reply will satisfy you! If you have any questions, please feel free to ask the enterprise.