As global oil giants struggle with plunging earnings, Chinese state oil firms are unlikely to be waiting in the wings to buy any unwanted assets. After pouring tens of billions of dollars into foreign energy projects in the last two decades, China’s rush to purchase overseas oil and gas projects is over – at least for now – and some state firms are even looking to sell assets. China, the world’s second-biggest oil consumer, invested more than $140 billion in the sector in the period from 1993, according to Thomson Reuters data. But Chinese firms have slammed the brakes on after a slide in crude prices has slashed returns on some investments and with deals coming under greater scrutiny since Beijing stepped up an anti-graft campaign two years […]