[APPF Inc Radio Frequency Welding and Sealing Services - Radio Frequency Welding and Heat Sealing APPF Inc. is a privately owned domestic manufacturer operating out of a modern 52,000 square foot facility located in Orange County, California. We specialize in contract manufacturing work building products to customer prints and specifications using our edxtensive experience in Radio Frequency Welding, otherwise know as Heat Sealing, specializing in PVC and TPU materials. We … Continue reading "APPF Inc Radio Frequency Welding and Sealing Services"]