Shenzhen Changlong Technology Co., Ltd. was established in Shenzhen, China in 2003. Focusing on environmental protection in the field of water treatment, the main business is the domestic and export manufacturing, research and development, design, sales and service of water treatment chemicals. The main products are ferrous sulfate, polyaluminum chloride, polyferric sulfate, phosphorus removal agent, composite carbon source, flocculant, polyferric aluminum sulfate, slaked lime, water quality testing kits, water quality analyzers, etc. We have more than 21 factories all over China, with a product capacity of 6 million tons. Changlong Technology adheres to the business principle of "creating customer value and reducing environmental protection costs".