Three groups of environmentalists are companies dedicated to the production and development, sale and sale of water treatment agents and are based on polyacrylate, aluminium polymer chloride, condensant, industrial glucose, sodium acetate, pam, pac, glucose, carbon sources, iron polymer sulphate, composite alkalis, iron sulphate and phosphorus; sodium choria sulphate; blowing agent; detergent; ammonium nitrogen removal agent; lemon acid; heavy metal trapper; fungicide; decolourant; emulsifier; deodorant; deodorant; denigent; defluorizer; etc。