2. Authoritative certification: it has passed international and domestic certifications such as CE, CB, CCC and GS.
3. Quality control in the production process: the process and safety regulations of all products shall be implemented in strict accordance with IEC international electrician and ISO900 1 system standards.
4. Quality control of key parts: all key parts such as motors, plastic parts and hardware are independently produced and controlled, which is more guaranteed than the quality of outsourcing manufacturers.