National Unified Service Center:

National Free Service Hotline: 400-1001-777

International Station Service Phone: 18965657119-Ms. Xu 17750083777-Mr. Zeng

Domestic station service phone: 17750083020-Mr. Chen

Company enterprise QQ: 4000592603 33482317

Company WeChat: 17750083019/17750083076

Enterprise email: ctngg@163.com