... Less ash fiber felt 1 Main material is viscose fiber and PAN fiber.2 Ingredient: carton element,H2,O2,N2 gene1 ... )Shape: black, soft and sticky (1000-1600 m2/g), micro-pore volume is 80 ... the water and air purification, recovery of the organic solvent and heavy metal, preservation of the vegetable and fruit, metal, preservation of the vegetable and fruit