Nanguan Street, Chengzhong District, Xining City. According to Baidu map, we know that it is located at Floor 3, West Unit 1 Building No.20, Nanguan Street, Chengzhong District, Xining City. Qinghai guoshou jewelry and jade quality inspection center was established on 20 15. Located in Xining City, Qinghai Province, it is an enterprise mainly providing professional technical services. Through the analysis of big data from Tianyancha, Qinghai Guoshou Jewelry and Jade Quality Inspection Center has two administrative licenses.