Zhejiang Sanzee Pipes Co., Ltd. (Sanzee for short), founded in 1994, is a high-tech business integrating the R&D, production and sale of corrugated stainless steel hoses and joints, high and medium-pressure stainless steel mesh tubes, metal compensators, buried polyethylene gas pipes, electric fusion pipe fittings and steel-plastic adapters. Headquartered in Fenghua, Zhejiang, the company has a registered capital of 50 million yuan, an area of 40,000 m2, a construction area of 30,000 m2, a staff of 260 people and 25 provincial sales branches and offices around China. The annual revenue of Sanzee in 2011 reached 150 million yuan.

After 20 years of development, Sanzee, as the founder of domestic stainless corrugated gas pipe and major drafter of the national standard of GB/T 26002-2010 Stainless Steel Pliable Corrugated Tubing and Fittings Used in Gas Piping Systems and CJ/T 197-2010 Stainless Steel Pliable Corrugated Tubing and Fittings Used in Gas Appliance Connection, has participated in the formulation of a number of national standards and industrial standards. Sanzee has successively won three national invention patents and 16 other patents. It passed the certification of ISO9001 Quality Management System in 2000 and obtained the China manufacturing license of special equipment in 2004. Sanzee products have been successively chosen by Beijing Gas Corporation, Shanghai Gas (Group) Co., Ltd., Towngas, China Resources Gas Group Limited and other major gas companies of China, entered the directory of qualified suppliers, and been exported to the USA, Canada, the United Kingdom, Russia, Norway and other countries and regions.