U.S. oil and gas major Exxon Mobil Corp. announced it had made a final investment decision to build a multibillion-dollar petrochemical complex in south China’s Guangdong province.

The firm did not specify a value for this investment.

The decision, announced late on Nov. 8, came nearly 18 months after China’s state news agency Xinhua reported in April last year that the U.S. firm kicked off construction of the $10 billion venture in Dayawan in Huizhou city.

One of the few petrochemical complexes in China that are wholly owned by a foreign investor, Exxon Mobil said the Dayawan plant will produce performance polymers used in packaging, automotive, agricultural and consumer products for hygiene and personal care.

China is the world’s largest petrochemicals consumer and importer.

Construction is underway on the greenfield project, which includes a flexible feed steam cracker, three performance polyethylene lines, and two differentiated performance polypropylene lines, it added.

The steam cracker will have a nameplate capacity of about 1.6 million tonnes per year.

Separately, Exxon Mobil told Reuters in July that the firm was advancing project discussions with potential partners for an import terminal for LNG also in Huizhou.

The two projects are part of an initial agreement the U.S. firm signed with China in 2018.

Exxon Mobil also owns a stake in a refinery and petrochemical complex in neighboring province of Fujian that is controlled by Chinese state refiner Sinopec Corp.