Hong Kong will raise its postage rates next month amid surging oil prices triggered by the conflict in the Middle East, with the cost of posting local letters increasing by 9 per cent to HK$2.40 (31 US cents).Hongkong Post on Monday said that the new rates would come into effect from April 13, highlighting the need to adjust postage rates to offset escalating operating costs, particularly increases in major cost components such as conveyance costs and terminal dues payments.“Overall, the...