Hangzhou Wenjian Calcium Industry Co., Ltd. was established in September, 2004. Our company is located in Jiande City Datong Town industrial functional area, covers an area of 50 mu. The company is one of the national high-tech enterprises professional in collection of scientific research, production, sales of calcium hydroxide, calcium oxide, and is one of the main drafting unit of calcium hydroxide, calcium oxide national standards industrial standards.