Address: Floor 15, National Jewelry Testing Center Building, No.4 Beili South Road, Luohu District, Shenzhen, Guangdong Province.

China Federation of Industry and Commerce Jewellery Testing Center

Address: 0705, 7th Floor, Cuizhu Building, No.2028 Cuizhu Road

China Geo University Jewellery Testing Center

Address: 4 18, 4th Floor, Guangfa Building, Tianbeisi Road, Luohu District, Shenzhen.

Guangdong geology college research institute jewellery testing center

Address: No.46, Tianbeisi Road, Luohu District, Shenzhen, Guangdong Province

National jewellery jade quality supervision and inspection center Zhonggang jewellery detection advisory service

Address: fahua south road 12

Guangdong province gold and silver jewelry testing center Shenzhen office

Address: Cuizhu Building, No.2028 Cuizhu Road, Luohu District, Shenzhen 13 1307

Zhong Jian Zhiji gold and silver jewellery quality inspection center

Address: 30- 17, Shuibei 2nd Road, Luohu District, Shenzhen.

Shenzhen jinzhi gold and silver jewelry inspection research center

Address: No.31Bulan Road, Longgang District, Shenzhen, Guangdong Province