Changzhou Kewei Fine Chemical Factory (KWCHEM) has been engaged in the manufacture of water treatment chemicals, steroids, hormones and intermediates for over 20 years. chinapharma-yu[at]msn[point]com,tyler[at]keweichem[point]com,welcome to your more inquiries.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.