HONG KONG (S&P Global Ratings) Aug. 31, 2018--S&P Global Ratings today assigned its 'BBB' long-term issue rating to a proposed issuance of non-cumulative subordinated additional tier 1 (AT1) capital securities by Bank of China (Hong Kong) Ltd. (BOCHK: A+/Stable/A-1). We also assigned our 'BBB' long-term credit rating to the junior subordinated tranche of the medium-term notes (MTN) program from which the proposed AT1 issuance will be drawn down. At the same time, we assigned a long-term 'A-' rating on the subordinated tranche of the MTN program, based on updated terms and conditions for the tranche to comply with Basel III regulations, and withdrew our existing 'A' program rating on this tranche. The issue ratings are subject to our review of