Every piece of jewelry from Chang Gan must be tested before it can be sold on the counter, and the after-sales service of jewelry is also very good.

Headquartered in Erqi District, Zhengzhou City, Chang Gan Chang Gan Jewelry Co., Ltd. is a large jewelry enterprise integrating design, production, wholesale, retail and franchise chain. The company has large jewelry exhibition halls and wholesale and retail centers in Beijing, Shanghai, Shenzhen, Henan, Hubei, Hunan, Heilongjiang, Xinjiang, Shaanxi, Sichuan, Jiangxi and other places, and its product sales network covers the whole country. Brand operation centers have been established in Beijing, Shenzhen, Zhengzhou and Wuhan.