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GoldChain Technological Development (Beijing) Co., Ltd.,

5th floor, Building B, Investment Square No.27 Financial Street
Xicheng District, Beijing, China
400-1037-166
service@huijinchain.com

Level 20 WeWork, 669 South Wanxiang Street, Wuhou District, Chengdu，610041
400-1037-166
service@huijinchain.com