Guangdong Jewelry, Jade and Precious Metals Quality Supervision and Inspection Station (Huadu), Huadu Port Chemical Mineral Testing Center. According to the query Baidu map display.

1. Guangdong Quality Supervision Inspection Station for Jewelry, Jade and Precious Metals (Huadu) Address: 50 meters west of the intersection of 11th Lane and Meiyazhi Street in Kengli District 3.

2. Huadu Port Chemical Mineral Testing Center Address: Go straight 100 meters from the container yard next to Huadu Port Comprehensive Office Building, Jiang Yan Road, tanbu town, Huadu District, Guangzhou.