From 8: 00 am to 5: 00 pm, official website of Jinzhongwei Jewelry and Jade Testing and Appraisal Center shows that the working hours are from 8: 00 am to 5: 00 am, and the company is mainly engaged in other quality inspection technical services; Engaged in the restoration, reproduction and rubbing of cultural relics approved by the administrative department of cultural relics; Literary creation and performance.