- Shanghai B&D Technology Co., Ltd.
- Address:5/F, No.600, Shifu Road, Songjiang District, Shanghai, China
- Shanghai Bante Instrument Co., Ltd.
- Address:Rm.1606, No.2, Lane 777, Zhongshan Rd.(S-2), Shanghai
- Fuzhou Chiarng Lurn Precision Machine Co., Ltd.
- Address:No. 5, Jinpu Zhi Road, Cangshan Science Park District, Fuzhou City, Fujian Province
- Chongqing Geological Instrument Factory
- Address:NO.2 XIANFENG STREET,SHAPINGBA DISTRICT,CHONGQING,CHINA