China Petroleum & Chemical Corporation or Sinopec Corp (HKEX: 386; NYSE: SNP; LSE: SNP; CH: 600028) has announced its unaudited financial results for the three months ended March 31, 2003. It said revenue rose 23.19% to RMB 128.36 billion over the same period last year, while operating profit climbed more than 25% to RMB 13.78…