... approval process will take normally more than 3 months, excluding the time needed for ... anthracite, bone charcoal, titanium oxide, polypropylene, polyvinyl chloride, iodine resin, electrolytic cell, electrode products) ... coagulant PAC (basic aluminium chloride, aluminum chlorohydrate), ferric sulfate, ferrous sulfate, ferric chloride, aluminum chloride, aluminum sulfate (alum), polyacrylamide ...