1. Classification and coding/composition: classification, coding, composition; 2. Basic parameters and normal working conditions: basic parameters, normal working conditions; 3. Requirements: 1. Material; 2. Appearance; 3. Assembly quality; 4. Performance : No-load test, sealing, drying oven heating time, outer surface temperature of the oven, inlet air temperature control, temperature difference inside the oven, temperature indication error, drying intensity, energy consumption, material yield, noise, exhaust dust emission , Cloth uniformity; 5. Electrical safety: Protect the continuity of the connecting circuit, resistance test, withstand voltage test, actuator, indicator light and display, wiring technology, marking, warning signs and reference codes, protection using PELV .