door handle torsion spring,torsion spring,small steel spring
4. Surface treatment: zinc plating
1) It can be used widely
2) The materials and specifications can be decided by the customers.
3) All the details and designs can be changed according to customers’ demands
4) We welcome customers to visit our factory
5) Usually, our products are packed by cartons. But if needed, it can be insteaded by the wooded cases or others.