Market SnapshotSingapore stocks opened lower on Friday. STI down 0.3%; Golden Agri-Res up 2%; OCBC down 2%; ST Engineering down 1%.Stocks in Focus$China Aviation(G92.SI)$: Its parent China National Aviation Fuel (CNAF) will merge with Chinese state-owned oil and gas enterprise Sinopec, the group’s board said on Thursday. If the merger goes through, Sinopec is expected to absorb all of CNAF’s assets and operations, reported Bloomberg. Shares of CAO closed flat at S$1.65, before the announcement.$Geo Energy Res(RE4.SI)$: The Indonesian coal producer announced its acquisition of majority stakes in two Indonesian shipping companies. This comes as resolutions related to its acquisition of 51 per cent stake