PHS resin (polyhydroxystyrene) is a photoresist resin and local companies have independent research and development capabilities.

PHS resin, also known as polyhydroxystyrene and polyparahydroxystyrene, is a resin used in the production of photosensitive resins and other photosensitive imaging systems. Compared with traditional phenolic resin, PHS resin has the advantages of low absorption rate of deep ultraviolet light, high sensitivity, high resolution, and can improve the etching resistance of polymers. It can…