... used in Paper-making, Chemical, Steel-making, Agriculture, Animal husbandry, Environmental protection, Power plant desulfurizatiom, Composite fertilizer and Feed etc.Grade ... Fine Chemical Co., Ltd., Dalian Tairui Chemical Industry Co., Ltd., Dalian Tairui Biological Engineering Co., Ltd., Dalian Tairui Photovoltaic Technology Co., Ltd., Daliang Tairui International ...