Founded in 1937, the Society of the Plastics Industry, Inc. is the trade association representing one of the largest manufacturing industries in the United States. SPI's 1,500 members represent the entire plastics industry supply chain, including processors, machinery and equipment manufacturers and raw material suppliers. The U.S. plastics industry employs 1.5 million workers and provides $304 billion in annual shipments.

• See also:
• Masterformat 1995
• Division 06 - Wood and Plastics