Pultrusion process is a method of continuous production of composite profiles. 

It is an automatic production process of pultrusion products by resin impregnating the roving of untwisted glass fiber and other continuous reinforcement materials, polyester surface felt, etc. on the yarn frame, 

and then by maintaining a certain cross-section shape of the forming pultrusion mold, 

and making it solidify in the mold and then continue to die.