... smoke purification,removing the heavy metal(especially Hg),PCDDs,PCDFs 2.GB/T19001-2000,NSF,ASTM 1. Product Information Activated carbon To ... smoke purification,removing the heavy metal(especially Hg),PCDDs,PCDFs. 2. Specification Moisturecontent(%)Ash content (%)Iodine number (mg/g)Finely ... demands. 3. Other related services 3.1.supply sample 3.2.catalogue and photos of product 3.3.The packing can ...