Interstate Plastics, 5600 NE 122nd Ave, Portland, OR 97230, US

Piedmont Plastics is among the leading suppliers of plastic sheet, rod, tube and film products. The company operates more than 30 distribution facilities throughout the United States and Mexico. It supplies industrial laminates, flexible tubing, security glazing, sealants, adhesives and sign and display components. Piedmont Plastics produces matte vinyl sheets for vehicle and display graphics. The company distributes 3M transfer and foam tapes. It provides engineering thermoplastics for insulator bushings, electrical connectors, valve seats and clamp rings. Piedmont Plastics primarily serves the construction, electronics, marine, pharmaceutical, manufacturing and transportation markets. The company was founded in 1968 and is based in Charlotte, N.C.