First, the properties and uses of Zibo Environmental Protection Technology Co., Ltd. developed starfish production of new composite corrosion inhibitor HX-902 contains mainly salt, sulfonate copolymer, phosphine acids and other additives class, can efficiently prevent calcium , precipitated magnesium salts, silicates and other substances fouling, corrosion mitigation pipe heat transfer equipment, especially for the Yellow River water, surface water, high hardness, high alkalinity of the circulating water, cooling water systems. Environmental Science and Technology Co., Ltd., Zibo starfish developed production of new composite corrosion inhibitor HX-902 inorganic phosphorus content is low, easy to control bacteria and algae slime production. Second, the quality index Item Index chem (as PO43-) 6.0-10.0% phosphorous content (as PO33-) content% ≤ 0.40 PH (1% aqueous solution) ≤ 4.5 Solid content% ≥ 28.0 Density (20 ℃) g / cm 3 ≥ 1.12 azoles (in C6H4NHN) content% ≥ 0.80 Third, use the drug directly into the sump, and the dosage is generally 40-60ppm (to supplement the water calculation).