Are the qualifications provided by the current water purification equipment company useful? Those are useless?

1. Approval document of national drinking water hygiene and safety product safety license (this certificate is the most authoritative certificate issued by the State Council).

2. Patent certificate (certified by the State Patent Office)

3.ISO quality management certification system

4.CCC certification,

5.AAA certification

6. Inspection report, (water quality inspection related report, for reference: Puni inspection report)

7. Trademark registration certificate, tax certificate and business license are also the embodiment of a company's value.