ChangZhou Kewei Fine Chemical Co., Ltd. (KWCHEM) has been engaged in the manufacture of water treatment chemicals and intermediates for over 20 years. We specialize in corrosion and scale inhibitors, biocide-algaecides, defoamers and preformed film, which are used in industrial water-cooling circulation systems. Our organic phosphonate, polycarboxyate series is used in steel making plants, power plants, chemical plants, textile printing and dyeing plants, oil fields and more.



Our production capacity is 20,000 metric tons annually. We have also begun to manufacture reverse...