Sheffield Plastics is one of the leading companies in the United States that provides high-performance thermoplastic sheets of more than 50 years. It offers services for corrections divisions and detention facilities. The company offers products for various architectural glazing applications. Sheffield Plastics also manufactures a variety of products to meet the needs of engineers and designers. It provides thermoforming and fabrication products, machine guards, custom-fabricated light lenses, and several fabricated lids, enclosures and parts. The company has achieved ISO 9001:2000 certification from the International Organization for Standardization.