Singapore’s engineering group Keppel Corporation Limited (Keppel) has agreed to sell 28% of its interest in Singapore Petroleum Company Limited (SPC) to Hongkong-based Kapital Asia Company Limited (Kapital Asia) for S$180 million in cash or S$1.50 per SPC share. The sale which reduces Keppel’s shareholding in SPC from 77% to 49% or 207,474,598 SPC shares…