Mainly committed to the production of a variety of products with high technical content such as water quality testing, rotational speed measurement, and air environment testing. The products are widely used in environmental protection, breeding, chemical fiber, schools, energy, transportation, aerospace, military, mechanical and electrical, home appliances, and scientific research. field. Main products: multi-parameter water quality testing (monitoring) instruments: pH acidity meter, EC conductivity meter, TDS meter, ORP oxidation-reduction meter, sodium meter, salinity meter; online pH controller; dissolved oxygen meter; mechanical manufacturing equipment speed Measurement: multifunctional tachometer, photoelectric tachometer; air environment detector: digital thermometer, temperature and humidity meter; optical detection instrument: refractometer; pet supplies: dog training device; and sewage submersible pump and mixer