1.To be used in burning smoke purification,removing the heavy metal(especially Hg),PCDDs,PCDFs 2.GB/T19001-2000,NSF,ASTM 1 ... . Product Information Activated carbon To be used in burning smoke purification, ... removing the heavy metal(especially Hg),PCDDs,PCDFs. 2. Specification Moisturecontent(%)Ash ...