HONG KONG (AFX-ASIA) – China Petroleum and Chemical Corp (Sinopec) (386.HK) expects to incur 37.6 billion yuan in capital expenditure in 2003, compared to 41.6 billion in 2002, chief financial officer Zheng Jiaren said. (US$1=8.28 yuan). He said the capex will be used to increase new oil and gas replacement resources, improve marketing networks, construct…