... surface,beautiful appearance,innocuity, mildew-free, no cracking and bend PVC board extruder 1.PVC lacquer-free boards are combined by extruding ... calendar. Then smoothing surface, beautiful appearance, innocuity, mildew-free, no distortion, no cracking and bending structure are available ... , etc. 3.This production line can produce one-layer and multi-layer soft and hard PVC boards (patches), as well ...