Xinhua News Agency, June 16, China National Petroleum Corporation, PetroChina, PetroChina Engineering, potential Hengxin, Hewlett-Packard, Bacon Energy, and so on. On the news, refinery operations in china increased in may, and there were signs that stronger u. S.gasoline consumption helped boost traders' expectations of energy demand, with overnight international crude oil futures prices up more than 3%.