but the supply of upstream raw materials is insufficient.

Polyhydroxyethyl methacrylate (PHEMA for short) is a polymer material polymerized by adding hydroxyethyl methacrylate (HEMA) as a monomer and adding other auxiliary materials. Polyhydroxyethyl methacrylate appears as a colorless, transparent and easy-flowing liquid. It is miscible with water and soluble in a variety of organic solvents. Polyhydroxyethyl methacrylate has good biocompatibility, optical properties, and water…