Shanghai Hualin Packing Machinery Co., Ltd. (Tiebiaoji Guanzhuangji)

Shanghai Yiling Mechanical & Electrical Equipment Co., Ltd.

Shanghai Mengfa Mechanical And Electrical Hardware Business Department

Yiguang Instruments of Surveying and Mapping (Zhaojiabang Road Branch)

Xingxin Mechanical And Electrical Building Materials (Shanghai Shidaxincun Qinzhou South Road Branch)

Zhonghan Instruments of Surveying and Mapping (Jinlan Huayuan Branch)