... We are metal machining factory 1. Name: small wire adjustable torsion springs2. Feature: adjustable torsion springs, small ... torsion spring, torsion wire spring, we are factory 3. Machining: CNC Turning, ... , automatic Milling, Drilling, threading, tapping, casting, forming, bending etc4. Finish: color anodizating, passtive, polishing, zinc plating, nickel ...