Sinopec Group, China’s super large petroleum and petrochemical enterprise group has started construction of a long-planned ethylene complex in the southern city of Zhanjiang.

The mega project, which includes construction of a refinery, is being built on the basis of a preliminary agreement as part of a 50:50 venture with the OPEC member Kuwait. The ethylene complex is likely to be completed by 2020.

The first phase of the mega projects will have an 800,000 tons per year ethylene complex that produces synthetics, plastics, rubber and fiber a 10 million tons per year refinery, the refinery is likely to be put into use a year earlier, Sinopec said.

The mega projects are expected to involve investment to the tune of 5.9 billion yuan ($848.76 million), of which 3.8 billion yuan ($546.66 million) investment will be done in the first phase.