Suzhou Holi Smart Technology Co., Ltd. 

Our company specialize in the production water quality analysis instruments and various sensors: 

Main production:
1. Industrial Online Meters/controllers and various sensors/electrodes.
2. Environmental protection Online Meters/controllers and various sensors/electrodes.

3. Flow meters and pressure gauges
4. Laboratory instruments and electrodes
5. Business water quality tester pen (PH/TDS/EC/ORP/TEMP......)
6. Soil meter/ Soil detector/ Fertilizer nutrient tester
7. Hygrometer and thermometer
8. Refractometer