1, sewage treatment service special qualification rating application form.
2, legal representative qualification certificate.
3, original and copy of business license.
4, the original and copy of the property right certificate or lease contract of the office and workplace.
5, the list of managers and professional and technical personnel and proof of education or title.
6, copies of training certificates of sewage treatment professionals (more than 10 people).
7, sewage treatment management documents, operating standards and quality acceptance system.
8, sewage treatment special products, equipment list (including models, specifications, technical indicators, purchase time, manufacturer, operation status, etc.).
9, the previous year's financial audit report or proof of credit.
10, 3 years of effective indoor environmental purification and monitoring projects to prove the material.