Dalian CHENGSI Technology Co., Ltd. (HQ)

Tel：(+86)0411-84754509

Web：www.ichengsi.com

Address：Room 603, Unit 1, POSCO IT Center, No.555 Huangpu Road, Dalian High-tech Industrial Zone, Dalian, P.R. China

RACEKU Solutions Shanghai Co., Ltd.

Tel：(+86)021-64483398

Website：www.raceku.com

Address：Room 2605-2606, Tower I of Grand Gateway Center, No. 1 Hong Qiao Road, Xu Hui District, Shanghai 200030, P.R. China

Jilin CHENGHE Technology Co.,Ltd.

Tel：(+86)432-64667580

Address：C509 NO.86 Shenzhen road Jilin Hi-tech Industrial Zone, Jilin city, Jilin Province, P.R.China

Address：502-58, No.3 suzhou Street, Haidian District, Beijing, P.R.China

Tel：400-920-7858

Address：A715, Guanghang Building, Shihaizhu District, Guangzhou, P.R.China