(1) Compression spring 
(2) Shuangyuan is specialized in producing precision small spring with wire (3) diameter from 0.1mm to 5.0mm. 
(4) Material: Stainless steel, music wire, spring steel like 65Mn etc. 
(5) Surface finish: Galvanized, black, nickel-plated, powder coating 
We are located in Xiamen (seaport city), China. 

We have 10 years of experiences in producing the spring. 
Our products are exported to many countries like Australia, USA, Italy etc. 
Pls contact with us if you are interested it.