... tightness and high in the efficiency so as to eliminate the environmental pollution.MaterialsInorganic compounds: borax, calcium carbonate, hydroxide, copper sulfate oxide, barium carbonate, antimony ... ), cadmium laurate, benzoic acid, germicide, sodium oxalate, cellulose acetate and so on.Ceramics: kaoline, silicone trioxide, clay and so on.Dyestuff: anthraquinone, black ...