Cedar Bayou plant is a petrochemical manufacturing facility located in Baytown, Texas. It is the largest U.S. manufacturing facility of Chevron Phillips Chemical Company. The plant operates seven process units on approximately 1,400 acres producing Ethylene, Propylene, Normal Alpha Olefins (NAO), High Density Polyethylene (HDPE), Low Density Polyethylene (LDPE), Linear Low Density Polyethylene (LLDPE), and Polyalphaolefins. Cedar Bayou plant opened in 1963 as Gulf Oil and was sold to Chevron Corp. in 1985. In 2000, Chevron Corp. and Phillips 66 merged their chemical businesses to form Chevron Phillips Chemical Company.