... good quality) 4.Size:depen Enterprise introduction As specilized precise spring manufacturer,we were founded in 2001 in Guangdong,China,we ... leash,badge reel and so on. Our material of the spring,which is High elastic, strong toughness of Japanese import ... steel spiral spring1.Type:coin,spiral,cylinder2.Bearing way:Torsion,compression,extension3.Material:stainless steel ,carbon steel(Japan SUS301)4. ...