Towngas customers are facing higher bills as Hong Kong’s largest piped-gas provider will raise tariffs by 4.4 per cent in August, citing higher operating costs, while pledging no further changes over the next two years. The Hong Kong and China Gas Company (Towngas) said on Thursday that the tariff increase would result in about half of its commercial and industrial customers paying no more than HK$320 extra a month. It added that 65 per cent of residential customers would pay at most HK$10 more...