- Shanghai Winner Optoelectronics Technology Co., Ltd.
- Distance Laser Sensor, Total Station, Theodolite, Auto Level, GPS, Tripod for Total Station Theodolite, Prism for Total Station, Prism Pole, Data Cable for Total Station, Battery for Total Station
Shanghai
- Shaanxi Deruite Industry and Trade Co., Ltd.
- Surveying Instrument, Accessories, Tripod, Staff, Prism, Prism Poles
Shaanxi
- Zengyu Industrial (Shanghai) Co., Ltd.
- Surveying Instrument And Accessories
Shanghai
- Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
- Geophysical Equipment, Borehole Camera, Well Logging Equipment, Water Level meter ,Resistivity Meter, Seismic equipment, Magnetometer
Chongqing