Polycarboxylic acid superplasticizer is a new generation of environmentally friendly superplasticizer independently developed by our company. The liquid is light yellow or reddish brown transparent liquid. The main component is a series of polycarboxylic acid polymers with molecular weight of 5000-50000. Compared with similar products at home and abroad, polycarboxylic acid superplasticizer has reached the international advanced level in technical performance index and cost performance. It is a series of water reducer with excellent performance, which integrates water reduction, slump protection, reinforcement, shrinkage prevention and environmental protection. It can completely solve the weakness of high viscosity and poor construction performance of high strength and high performance concrete, and is an ideal admixture for preparing high strength and high performance concrete. It can be compounded with various additives to form multifunctional additives, such as pumping agent, early strength agent, impermeable waterproof agent, retarder and so on.