... chemical, lightindustry, pharmacy, food, environmental protection, etc. For example: adipic acid,alum,aluminium hydroxide, ammonium hydrogen carbonate, ammonium chloride, ammoniumnitrate, ammonia ... food oil, fish processing, salt cake, glutamic acid, hops, pesticide,diatomite, herbicide, tartaric acid, sodium sulfate, sodium phosphate, sodiumnitrate, burnt ore charcoal black, etc ...