Chinese companies in several sectors – including energy, petrochemicals and agriculture – stand to benefit from surging oil prices and the yuan’s easing deflation, which analysts said could help investors find gains amid the negative effects of the Middle East war. Petrochemical companies on mainland China’s exchanges, including Satellite Chemical and Guangdong Redwall New Materials, raised product prices to reflect the surge in oil costs, a move that sent their stock prices soaring. Fertiliser...