SINGAPORE (AFX-ASIA) – DBS Vickers Securities has raised its earnings estimates for jet-fuel procurement company China Aviation Oil (Singapore) Corp Ltd by 8.7% to S$62.8 million for the year to December 2003 following news that it will receive 2.98 million euros in dividend payments from its 5% investment in Spain’s Compania Logistica de Hidrocarburos (CLH)….