Harvey Sen is a company dedicated to the field of environmental monitoring, specializing in the development, manufacturing, and sale of innovative, reliable, and cost-effective water quality testing instruments. Our water quality testing reagents are rare pre made reagents that can quickly dissolve in 20 minutes. The products produced by Havelson cover all categories required by the water quality testing industry: COD rapid detection reagents, ammonia nitrogen rapid detection reagents, COD analyzers, COD digesters, total phosphorus reagents, total nitrogen reagents, and other water quality testing kits. We adhere to the concept of saving time, costs, and solid waste, and have successfully become a manufacturer with a high repurchase rate for customers of water quality testing reagents..

Harvey Sen places great emphasis on technological innovation and is committed to providing users with high-precision instruments and expert level services. Currently, the company has a strong research and development team. Our products are widely used in industries such as environmental monitoring, petrochemicals, public utilities, water cleaning and sewage treatment, electronics, and others where water pollution may affect production or pose a threat to life.

The picture shows some products of Havelson water quality testing reagents

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