The thickness of HDPE geomembrane is 0.2 mm - 3 mm. And it is made of premium polyethylene resin as material, the main ingredients is 97.5% high density polyethylene, about 2.5% of carbon black, anti aging agent, antioxidant, ultraviolet HENAN OKAYorbent, stabilizer as accessories, etc. What' s more, its anti seepage and isolation performance are strong.