Home > About us

About us

Founded in 2003 in Shenzhen, Shenzhen Changlong Technology Co., Ltd. is one of the high-tech enterprises with excellent employees. We focus on environmental protection, is a collection of research and development, design, manufacturing, sales, service as one of the environmental technology companies. Currently there are 21 plants in China with a production capacity of 6 million tons. Main production of polyferric sulfate, polyaluminium chloride, phosphorus removal agent, composite carbon source, defluoridation agent, polyaluminum sulfate, quicklime.Nano - alkali, dry ferrous iron, composite breaker and other water treatment products.


Our products are mainly used in water and sewage treatment plants, environmental protection operating companies, leather goods factories, paper mills, PCB factories, as well as government environmental supervision, laboratory testing and other related industrial applications.  The company has 4000 square meters of R&D laboratory, more than 20 million R & D equipment.                                                               

We have a professional R&D team and more than 1100 CMA certified third-party testing laboratories. For users of complex water samples, the company can provide free detection, diagnosis and analysis, customized optimal solutions.