Conduct electrical safety performance testing on the heater according to safety regulations or customer requirements. This test focuses on the characteristics of the product's conductor characteristics under high voltage, examines the changes in relevant electrical parameters, and determines whether the product has been broken down; Conduct insulation strength tests on products at specified voltages to assess their insulation level, identify insulation defects in the tested products, and measure their ability to withstand overvoltage; This test focuses on the characteristics of the conductor after heating the product under high voltage, examining the changes in relevant electrical parameters to determine whether the product has been broken down.