Contact Us Our Branches Contact Details Zhengzhou Head Office Address:Jingkai Square, No.1507, Hanghai East Road, Free Trade Zone, Zhengzhou, China Phone:+86 15515573212 Email:sherry@gelgoog.com Guangzhou Branch Office Address:No. 28 Huaxia Road, Tianhe District, Guangzhou, China Phone:+86(371)63398802 Email:sherry@machinehall.com Shanghai Branch Office Address:Hongqiao World Center, Shanghai. Phone:+8615515573212 Email:camille@machinehall.com