Saudi Arabia was again the single biggest oil supplier to China in 2022, despite a surge in Chinese purchases of crude from Russia, which stayed second-placed on the list of top suppliers to the world’s largest crude oil importer. China imported around 1.75 million barrels per day (bpd) of crude oil from Saudi Arabia in 2022, basically flat on the year, according to data from the General Administration of Customs of China cited by Reuters. Chinese crude oil purchases from Russia averaged 1.72 million bpd last year, up by 8% compared…