PetroChina, Sinopec Corp and Yunnan Copper Industry are among the companies that will bear the brunt of the 7.8-magnitude earthquake in Sichuan province, as the disaster disrupts supplies and dents sales.
However, mainland stocks rebounded yesterday as analysts and economists predicted the quake's impact on the economy would be limited.
PetroChina and Sinopec said their gas output was affected as the nation's two largest oil companies halted operations at some wells in Sichuan after Monday's devastating quake.
PetroChina reduced gas output in the province by 5.6 million cubic metres per day, the company's parent China National Petroleum Corp said yesterday.
Shenzhen-listed Yunnan Copper, the mainland's third-biggest copper smelter, said disruptions to rail transportation might cut its sales by 130 million yuan (HK$144.8 million), equivalent to about 25 per cent of its first-quarter revenue.
Yunnan Copper said that normal operations in Sichuan would not resume for the next 15 days due to the transport disruptions.
Yet, the company's shares surged 9.96 per cent yesterday to 28.59 yuan, following a 6.07 per cent plunge on Tuesday, after it said copper mines in Sichuan's Liangshan and Liwu remained intact.
