... thermoforming process. II. Vacuum Forming Machined process (Plastic vacuum forming):1. Extruding plastic sheet:ABS, HIPS, PP, PE, PC, PMMA ... ,handicrafts, machinery and metal industries. IV. Why US (Plastic vacuum forming)?1. Uses imported high quality acrylic sheet, ABS, PC, HDPE ... , PP,PE, PVC, PMMA, HIPS, and other ...