we are a trade company in qingdao mainly deal feed and food additive chemical. we are very strong in STPP SHMP ammnium chloride all grade. magnesium chloride choline chloride ammonium bicarbonate sodium bicarboante sodium carboante sodium thiosulphate Citric acid Sodium citrate Sodium benzoate SMBS CMC Sodium metasilicate ETHYL-MAL TOL ion exchange resion MgO PAC caustic soda steel coils PPGI/GI and so on. we have in this line more than 15years. our factory more than 30year.