Shenzhen Chang Hong Instru. Co., Ltd., is a new high-tech private enterprise which set up since 2002, Committed to professional production of water quality testing and environmental analysis instruments business.

We mainly produce the following products: A series of laboratory desktop or portable COD fast meter; COD heater; COD & ammonia nitrogen meter; Ammonia nitrogen meter; Table turbidity; Portable pH meter; Portable conductivity meter; Portable dissolved oxygen meter; Ultrasonic open-channel flow meters; Industrial dissolved oxygen meter, pH meter, conductivity meter and ultrasonic level gauge products and so on.

Our products have been sold all over the country, a total about 4000 users over, and exported to many countries. Our technical staff account for 70% of the total number of staff, the formation of a group from the doctoral, Master's, senior engineers and terminal developers is a well-established skills and practice of experienced research and development team, the knowledge structure related to optical, chemical analysis and computer hardware and software technology.

The company make use of its technology development ability, the advanced production technology, perfect equipment, constantly improve the quality of products and services, based on the principle of being highly responsible for the customer, and strive to high starting point, high-grade, high quality, high standards, development, production and sales of domestic first-class water quality and environmental analysis instruments.