1.the cylinder with computer keys ,general keys
2.body made of zinc or aluminium
3. the cover,screws made of stainless steel

1. Body part made of super material of zinc or aluminium;

2. The cover,the joint ,and all screws used in the product made of super 304# stainless steel.

3.Perfect appearance of surface finish. SSS or PSS for choice

4.Mature workmanship and strict quality control system to guarantee the product quality.