Question: What colorless fammable gas does Dedar Bayou manufacture?

<P0-S0>  It is a colorless flammable gas with a faint "sweet and musky" odour when pure. <P0-S1>  It is the simplest alkene (a hydrocarbon with carbon-carbon double bonds). <P0-S2> Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula C2H4 or HC=CH. <SEP> <P1-S0> LaBelle is an unincorporated community on Taylor Bayou and FM 365, ten miles south of Beaumont, in central Jefferson County, Texas, United States. <P1-S1>  It is part of the Beaumont–Port Arthur Metropolitan Statistical Area. <P1-S2>  Although officially recognized settlers had lived in the Taylor Bayou area since the 1830s, a post office was not established at the community known as Lower Taylor's Bayou until 1888. <P1-S3>  In that year new postmaster J. E. Broussard named the post office LaBelle in honor of his fiancee, Mary Bell Bordages. <P1-S4>  The area's first school was probably started by Leo (Peg Leg) Craigen, near what later became the Port Arthur Country Club. <P1-S5>  Located in the fertile but flood-prone prairies of the upper Texas Gulf Coast, LaBelle was the site of one of several pumping stations designed to control flooding and drainage along Taylor Bayou. <P1-S6>  Because of its somewhat isolated location, the LaBelle post office was discontinued in 1914. <P1-S7>  Local schools were consolidated with those of the town of Fannett in 1923. <P1-S8>  Fourteen years later, however, the discovery of large quantities of oil and natural gas at the LaBelle oilfield, five miles south of the community, sparked new interest in the area. <P1-S9>  Scattered residences, the pumping station, and oilfields and gas lines to the south marked the LaBelle community on maps during the mid-1970s. <SEP> <P2-S0>  It is the largest U.S. manufacturing facility of Chevron Phillips Chemical Company. <P2-S1> Cedar Bayou plant is a petrochemical manufacturing facility located in Baytown, Texas. <P2-S2>  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. <P2-S3>  Cedar Bayou plant opened in 1963 as Gulf Oil and was sold to Chevron Corp. in 1985. <P2-S4>  In 2000, Chevron Corp. and Phillips 66 merged their chemical businesses to form Chevron Phillips Chemical Company. <SEP> <P3-S0> Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). <P3-S1>  A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide). <P3-S2>  A gas mixture would contain a variety of pure gases much like the air. <P3-S3>  What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. <P3-S4>  This separation usually makes a colorless gas invisible to the human observer. <P3-S5>  The interaction of gas particles in the presence of electric and gravitational fields are considered negligible as indicated by the constant velocity vectors in the image. <P3-S6>  One type of commonly known gas is steam.