We have been in this industry for over ten years, our products are as flows: chemical sensors, photoelectric sensors, chemical analyzers, meters and equipments, water monitoring systems, et al.Tianhe takes the quality control as life of our company and we got the SGS ISO 9001 (2000) Certification in June 2003. The products which involve in Certification contain series of analyzers like pH/ORP analyzers, dissolved oxygen analyzers, residuary chlorine analyzers, conductivity analyzers, titer analyzers, nephelometer and ion analyzers for natrium, cuprum, iron and nickel, they also contain water monitoring systems. We act as agents of many well-known companies in this industry. We strive constantly to serve our clients with good quality products and best service just like 揚erfect Forwardly, Quality-control Strictly, Service Considerately?