Sinopec Corp and Saudi Aramco have started constructing a refinery and petrochemical complex in southeast China's Fujian province, marking another big investment in the country's recent wave of petrochemicals expansions. The complex, estimated to cost 71.1 billion yuan ($9.82 billion), also marks Saudi Aramco's second major refining and petrochemical joint venture with a Chinese state oil major as the Middle Eastern energy company steps up cooperation with private Chinese companies. The new venture, located in Gulei industrial park of Zhangzhou city, includes a 16 million metric ton-per-year (tpy), or 320,000 barrels per day, refinery, a 1.5 million tpy ethylene plant, a 2 million paraxylene facility as well as a 300,000 tonnage crude oil terminal, Sinopec said in a statement.