สถานที่กำเนิด
Hebei, China
COLOR
black/green/gold/red/blue/brown/yellow/or as you wish
Material
65Mn/60Si2MnA/55CrSi
Coil Spring Heat Treatment
Hardening and Tempering
Spring Surface Treatment
Powder coating
Auto spring
High performance Suspension
Coiling
Cold Coiling&Hot Coiling