Nơi xuất xứ
Tianjin, China
product name
Roller Shutter Door Spring For Rolling shutter doors
species
Black torsion spring and galvanized torsion spring
Material
Steel, Carbon steel, Stainless steel, Alloy
Usage
Shutter door/garage door/Roller door
Wire Dia
0.1-50mm, as your requst
Surface treatment
Zinc-plated, , Electrophoresis Coating , Oxide Coating
Certification
ISO 9001 :2008
Place of Origin
CN,Tianjin