SIA Engineering Co posts 1HFY2025 net profit of S$68.8 mil, 16% higher y-o-ySINGAPORE: SIA Engineering Company (SIAEC) reported on Tuesday (Nov 5), a net profit of S$68.8 million (RM227.62 million), S$9.5 million higher, or 16% up year-on-year (y-o-y), for its 1HFY2025 ended Sept 30, 2024.