Xiamen Shuangyuan Springs Ind Co. Ltd is registered in the city of Xiamen, China which is a beautiful peninsula also an international ***** is one of the leading manufacturer of gas spring and spring hardware in China. Founded in the year of 1998 with more than 300 employees now. Shuangyuan consists of two branch factory: Gas spring Factory and Spring Hardware Factory. Gas spring factory produce compression gas spring, locking gas spring, tention gas spring, gas cylinder for office chair, damper, door closer, stainless steel gas spring, etc. Spring Hardware Factory produce compression spring, extension spring, torsion spring, conical spring, disc spring, die spring, spiral spring, power spring, garage spring, zig-zag spring, wire forms, hot coiled spring, waved spring, oil seal springs, brake chamber spring, mattress spring, battery spring, Stamping parts, cast, forged parts etc.Wire diameter: 0.2mm to 75mm The production are done strictly according to ISO9001-2000 international quality standard . Our products are popular used in U.S.A., French, Germany, Poland, Turkey, Japan, Korea, India, and other countries. Furthermore, we can supply the products according to user&＃039;s need. The purpose of our company is "credit first and quality first". All the friends of foreign and domestic are warmly