The company conducts a series of reliability tests on the products. For example, appearance quality, structure size, speed and power, low-voltage start-up performance, electrical strength, insulation resistance, noise and vibration, mechanical strength of outgoing line, combined strength of rotor, temperature rise, vibration, drop, salt spray test, high temperature storage, low temperature storage, cold and hot impact, ALT (life test), ROHS test, etc., can be shipped only after the products meet the requirements.