วัสดุ
stainless steel,carbon steel,customized
การใช้
book,paper,car,sports equipment,door,etc.
สถานที่กำเนิด
Guangdong, China
Name
Cheap Double Torsion Spring
Material
Carbon steel,stainless steel,inconel,etc.
Usage
Car,sports equipment,door,book,paper,etc.
Direction of turning
Multiple choice
Galvanize
Znic,nickel plating,colored-plating...