Jansen Liang +86 187 1115 7016

E-mail service_gx@hngxtech.com

Harry Hu +86 134 3090 2997

E-mail Grandsyn_SC@hngxtech.com

Company Address Room 101, Guangxin New Material Technology (Changsha) Co., Ltd., Ningxiang Economic and Technological Development Zone, Changsha City, Hunan Province