Basically, it can be divided into two categories, namely wet contact type and dry pressure forming. According to the characteristics of the process, there are hand layup molding, laminated molding, RTM method, extrusion molding, molding, winding molding, etc. Hand layup molding includes hand layup method, bag pressing method, spray method, wet layup low-pressure method, and mold free hand layup method.

There are four most commonly used molding methods in the world.

④ RTM method (resin transfer molding): mainly used in countries such as Europe, America, and Japan.