Our products---PNS Naphthalene-based superplasticizers can be divided into high-concentration products (Na2SO4 content <3%), medium-concentration products (Na2SO4 content 3%-10%) and low-concentration products (Na2SO4 content)>10%) according to the Na2SO4 content in the product content. Performance 1. When the strength and slump of the crucible are basically the same, the amount of cement can be reduced by 10-25%. 2. When the water-cement ratio is constant, the initial slump of concrete increases by more than 10cm, and the water reduction rate can reach 15-25%. 3. It has a significant early strength and strengthening effect on cockroaches, and the strength increases by 20-60%. 4. Improve the working capacity of concrete and comprehensively improve the physical and mechanical properties of concrete. 5. It has good adaptability to various cements and is compatible with other types of concrete admixtures. 6. Especially suitable for the following concrete projects: fluid concrete, plasticized concrete, steam concrete, impermeable concrete, waterproof concrete, natural curing precast concrete, steel and prestressed reinforced concrete, high-strength ultra-high-strength concrete. 7. The slump of concrete has a great loss over time, and the slump loss in half an hour is close to 40%.