?? Material: outer barrier film, effectively block most chemicals, inner double layer non-woven fabric ?? Features: Double zipper design, no need for additional tape sealing to ensure the chemical protective clothing leaks; double sleeve design to ensure the liquid tightness of the anti-chemical gloves and clothing joints (need to be sealed with tape or suitable for glove connection ring); Seam welding ?? Protection level: TYPE 3-B, TYPE 4-B, TYPE 5-B, EN1073-2, EN14126, EN1149-5 ?? Function: This product can excellently protect a variety of high concentration organic and inorganic chemicals and biological media. ?? Scope of application: chemical, pharmaceutical, mining, agricultural, industrial cleaning, hazardous waste treatment, etc.