China vowed on Friday to protect the rights and interests of Chinese companies after the U.S. unleashed on Thursday a new sanctions package on Chinese entities for importing crude oil from Iran. The U.S. Treasury on Thursday blacklisted around 100 individuals, vessels, and companies—including China’s Shandong Jincheng Petrochemical Group, a Shandong teapot refinery accused of buying millions of barrels of Iranian crude since 2023. Also sanctioned were the Rizhao Shihua Crude Oil Terminal at Lanshan Port, accused of handling Iran’s…