Optimize prescription of plastics and prefer use resins with low shrinkage; reduce dosage of recycled materials; dry the material as much as possible; add proper amount of lubrication additive to improve fluidity of melt and to reinforce the effect of shrinkage compensation; select proper reinforcing filling material to reduce shrinkage and to improve the material’s capacity for resisting shrinkage tress so that the surface can be avoided.
thanks for sharing your experience about injection molding. that’s very good