Wison Engineering Services Co., a private Chinese EPC contractor, said in November that it finished production, transport and installation of the ninth modular ethylene cracking furnace for Zhejiang Petrochemicals’ 40-million-ton-per-year (tpy) integrated refining and petrochemical complex on Zhoushan island off Shanghai.

Eight other modules had been shipped and installed since March, each barged 50 miles to the site.

Wison says the complex is set to have “the largest single-chain ethylene production capacity in China.”

Each cracker—53 ft high and weighing 3,689 tons—has an output of 200,000 tpy. Wison says challenges included tidal conditions and a typhoon.

Contract value was not disclosed, but the project involves a $23.7-billion investment from Zhejiang, says an online publication, with Saudi Aramco a recent investor as well.

Wison also announced this year a $360-million EPC contract for a petrochemical project in Texas, with modules set for delivery in early 2020. The project site and owner were not disclosed, nor was the identity of a “local construction contractor” Wison said it is working with.

Wison called it the largest U.S. modularization project awarded to a private Chinese petrochemical firm.