No | Material Identification | Part Name | Picture Identification Method | Notes

1 | Power plug | Power plug | Heart test | Harder material than clamp post, clamp post is soft, heart test, give burn in thermostat, put melt in thermostat

2 | BP Ret | | Bo threads test, destructive cut test | Cut it long time, you will clearly see body, use body for confirmation of plastics, low carbon steel, aluminum