Groups of products bei jing kang wen chang sheng you gong si, China, Activated carbon, Ammonium iron (III) sulfate (1:1:2) 12- aqueous, Antiseptics for water, Anthracite filtrants, Aluminum hydrochloride, Elucose, edible, Sand, Polyacrylamides, Pitches, Hydrate of sodium, Ceramic filters,