Shuman Compounds Since 1947, Shuman Plastics, Inc. has been a supplier of thermoplastic raw materials to the plastics processing industry worldwide. Shuman Compounds are developed and supported by modern laboratory and processing facilities. All products adhere to strict, quality standards. Our compounded materials meet specific customer needs, offering performance with value. ABS Polycarbonate* PC/ABS Alloy Polystyrene* *UL Recognized Compounds Polyethylene Polypropylene Engineering Plastics Others… Process Flow Chart PDF UL FILE QMFZ2 PDF ALL COMPOUNDS PDF