Petrochemical products are derived from petroleum products. Many other chemical compounds are derived from other fossil fuels such as coal, natural gas, or other renewable sources such as corn or sugar cane. With over 30 years of experience in supplying the chemical and petrochemical industries with high quality expansion joints and check valves, Proco Products, Inc. understands the unique needs and demands that companies in these businesses face. Proco operates worldwide, and maintains one of the largest product inventories in North America. For more information on expansion joints and check valves from Proco Products, Inc. and to check pricing and availability, contact us today. For an interactive PDF applications form, click here.