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Factory Price Plastic Advertising Board PVC Foaming Regulator Acrylic Polymer Resin. Enhanced Melt Cohesion: Increases pressure and torque of PVC melt for better homogeneity. Uniform Foam Structure: Promotes refinement of foam pores for denser PVC products. Bubble Merging Prevention: Improves melt strength to prevent bubble merging during processing. Wide Application Scope: Suitable for PVC foam products, wood plastics, profiles, pipes, and plates.