- Shenzhen Bestone Industrial Co. Ltd.
Guangdong
- Leeder Technology Holdings Limited
- Data Logger, Sound Level Meter, Hygrometer, Thermometer, Hygrometer Data Logger, Light Meter, Temperature and Humidity Meter, Lux Meter Data Logger, Decibel Meter with Data Logger, Four Channel Thermometer
Guangdong
- Shenzhen Huiyan Precision Technology Co., Ltd.
- Fiber laser marking machine and accessories
Guangdong
- Kunshan Ast Optoelectronics Co., Ltd
- CO2 Controller, Par Meter
Jiangsu
- Nanning Dingchen Instrument Co., Ltd.
- Experimental Testing Equipment
Guangxi