Zhejing yihe water industry Co., LTD formerly named Zhejiang Sejin Valve Manufacture Co., LTD.The company located in Taizhou Yuhuan which is known as the “valve capital of China”. The company was established in May 28, 2002, with registered capital of 90 million, headquartered in Yuhuan electrical and mechanical industrial base. With the throughput of 20 million fittings and 2.8million valves a year, Sejin has become the leader of China's valves and copper tube and PEX pipe and PAP pipe's manufacturers.

In the course of many years of development, now overseas business has extended to the United States, Canada, Germany, Spain, Sweden, France, Japan, over 20 developed countries and regions. The company was awarded the "green enterprises in Zhejiang Province", "high-tech enterprises in Zhejiang Province", "Zhejiang provincial-level enterprise technical centre", "National plumbing, valves famous brand product (Procurement) sentinel Enterprises ", "Taizhou famous trademarks" and "brand-name products in Taizhou". In addition, the company with independent intellectual property rights of the down-pipe was identified as high-tech products in Zhejiang Province, tied for the national Torch Program projects.

Company takes the lead in approving the ISO9001: 2000 international quality system, ISO14001: 2004 Environmental Management System, GB/T28001: 2001 Occupational Health and Safety Management System Certification, and access to a number of international product and system certification in the industry.

Company actives in expanding business, and focus on new products, new technology and new technology research and development as well. The remarkable results achieved 15 inventions and utility models Patents, and participation in the formulation and presided over the three national standards, to fill the two gaps in the domestic standards.

Looking to the future, the company focuses on the development of companies operating large-scale, modern management, high-tech products of the international competitiveness of plumbing pipe system as a whole solution providers and brand operators. Adhering to the "energy-saving, water saving, materials saving, environmental protection" the development strategy of building the country's largest plumbing pipes parts industrial base, to become one of the world's largest plumbing pipeline system supplier.