HP-611 pre-filming agent and phosphorus-free cleaning solution is applied in places with strict environmental protection requirements. It offers an environmentally friendly solution that can directly transit to cold operation after pre-filming with small amount of water changes. The low-phosphorus pre-filming treatment process can control the total phosphorus content at 10 to 20mg/L. This agent is applicable to open circulating cooling water systems, water supply pipelines, central air conditioning systems, etc.

The HP-611 series products are mainly compounded from organic polyphosphonic acids, polycarboxylic acids, high-efficiency corrosion inhibitors, etc. In combination with corrosion inhibitors for non-ferrous metals, they can effectively form films to prevent corrosion of various metals.