There are three surface treatment methods, 21, thermochemical treatment method, and, first burn off the paraffin emulsified wettability of glass fiber, and then use surface treatment agent, mainly used for, Products, 32, pre-treatment, method, that is, surface treatment agent, added to the glass fiber sizing agent formula, in Laser, medium treatment, mainly used for five years, roving, extremely, textile products, 4, 3. Migration method, that is, surface treatment is added to the resin for use. There are many commonly used online methods. The most commonly used method is silane coupling agent. Its structure and introduction will not be repeated here. There is also methacrylic acid. atoms in the complex. The hydrogen bonds on the surface of the glass fiber form hydrogen bonds, and then dry and dehydrate, and then an etherification reaction occurs between the complexes and between the complexes and the glass fiber to form ***