Terminal insulation and electrical conductivity of the material determines the Terminal. Each Terminal determines the project's success, any one terminal will cause failure of the entire system.
Painful lessons that occur at home and abroad in this regard is very impressive blocks of plastic insulation materials and conductive parts directly related to the quality of terminals. Failure analysis failure prevention is even more important. To guarantee the quality and reliability of more realistic significance analysis is the Foundation of prevention is the goal.
In a sense, should be achieved where functionality is exposed parts of conduction required breakover, speaking from the angle. Reliable contacts. Insulated gripping surfaces should not be conducting the required insulation reliability.
You want to maintain good contact at any given time, good insulation, good fixed, only the "three excellences", will be able to guarantee its safe and reliable, the project can proceed smoothly.