ST-1020 dustproof half mask respirator

ST-1020 dustproof series has won the Coaxial breathing valve World Invention Patent:

China Invention Patent Number:PCT/CN2012/078939

China Invention Patent Number:ZL201110302660.1

China's new practical patent number:ZL201120380187.4

China Appearance Patent Number:ZL201130354952.0

Product Description: 

1. Use the world invention patent coaxial breathing valve

2.The mask is made of silicone material, and the inside is fully sealed with a 360-degree face design, which guarantees the tightness of the face

3.The head is fixed to avoid shifting the mask. Headband adjustment can be completed in one action, fast to wear, and can be hung freely on the chest when not in need

4.Streamlined air inlet design, efficient diversion, fireproofing, moisture resistance

5.The inner cover contains a ST-1020 half mask and a 1020 KN90 filter