Coal based pickling granular activated carbon: Certificate: NSF,ISO9001, ISO9002 Usage: for water purification. Product Name: Coal based pickling granular activated carbon 8x20 meshProduct Type:CG90-12,CG95-12,CG100-12,CG105-15, ... .65 moisture(%): 0.5—8 floating(%): 0—5 particle size(mesh): 4—60 Product Package:12.5kg,25kg,500kg plastic woven ...