ADD：RM2401,Berkshire House,25 Westlands Road,

Quarry Bay, Hong Kong

ADD:1120, Gongda Jianguo Hotel, No.100 Pingleyuan,

Chaoyang District, Beijing

Langtech (Guangzhou) Machinery Co.,Ltd Shanghai Branch

ADD：Room A02,7/F,building G,Weijing center,2337 Gudai Road,

Minhang District,Shanghai

TEL：88888888 / 88888888

Langtech Limited（Chongqing）

ADD:Room 403,building 1,Jinkai Xiexin center,68 Jinkai 

Avenue,Yubei District,Chongqing

Langtech（Shanghai）Machinery

ADD:Unit 1309，Zhongshan Plaza，No. 1065，

West Zhongshan Rd