Established in 1997, Fenghua Renlong Machinery Co., Ltd is the leading manufacturer of gas spring and spring in China . We also provide manufacturing service for metal stamping, plastic injection and burning. The company was certified in ISO9001: 2000 in 2003. In September 2003 we joined the professional Committee of Gas Spring. Our tensile gas spring and Dominating Adjusting Bi-way Steel Spring got the national patent with patent No. ZL200420023029.3 and ZL200420109894.X respectively.
