1, elevator installation and maintenance enterprise qualification declaration form (in duplicate).
2, enterprise name pre-approval notice.
3, enterprise credit certificate.
4, proof of office space.
5, the relevant technical personnel title documents and proof of personnel relations.
6, quality assurance system. Chengdu, abbreviated as "Rong", also known as Rongcheng, Jincheng. Chengdu is located in the central part of Sichuan Province, is the capital of Sichuan Province, sub-provincial city, one of the first batch of national historical and cultural cities in China, and is an important center city in the southwest.