| material | Copper , iron |
| process | metal powder, mixing/alloying,pressing,deformation, heat treatment, sintering,machining joining coating,quality assurance,package |
| heat treatment | Ordinary quenching |
| surface treatment | blacken,dacromet plated |
| performance | High precision,high wear resistance,low noise,smooth and steady, high strength |
| payment,minimum order and delivery | T/T ,LC, Delivery time is Negotiation |
| packaging | Carton box or customer requirement |