BEIJING (AFX-ASIA) – Shenzhen Energy Investment Co Ltd (SZA 000027) said its net profit for 2003 rose 37.8% to 713.67 million yuan from 517.92 million a year earlier on increased output. (US$1=8.27 yuan). Core revenue from electricity sales climbed 25.5% to 4.80 billion yuan from 3.83 billion a year earlier. Earnings per share rose to…