Changzhou Kewei Fine Chemicals Co., Ltd. ( KWCHEM ) has always been engaged in products of water treatment chemicals, intermediates for over 20 years. We specialize in corrosion and scale inhibitor, biocide-algaecide, defoamer and preformed film, which are used in industrial cool circulation water system. The organic phosphonate, polycarboxyate series are utilized in steel making plant, power plant, chemical plant, textile printing and dyeing plant and oil field, etc. For above pr...