Here are so many cases that small parts defect caused big loss even threaten life safety,so we always keep"small parts,big responsibility" in mind,the key size and function must be 100% test to make sure customer equipment could run well
big tree precision are special in provide precision machining parts for industry pneumatic&hydraulic automible etc,during the 12 years development we gain wealthy experience from mistake and skill at all kinds of tooling technology,lathing,milling,forging,cold extrusion etc...