LEGISLATOR Fred Li Wah-ming is to question the Government in the Legislative Council over the Housing Authority's policy of mandating the use of Towngas in public housing estates. Mr Li said the practice was anti-competitive and constituted a monopoly. ''Other fuel suppliers have complained and I will present the question in Legco on June 30,'' he said. The Housing Authority's fuel supply policy is not based on legislation, but an internal directive, according to alternative fuel suppliers. Malcolm Priday, sales director of Mobil Oil Hongkong, commented: ''This is a loss of new opportunity for us, and we would like to be able to compete on an equal footing.'' The Housing Authority provides homes for more than three million people in the territory, a substantial market to be shut out of, say other fuel companies, who supply liquified petroleum gas (LPG) and other alternatives to Towngas. The mandate, which has been in effect since the Authority's inception in 1988, takes into account safety, estate planning, convenience, reliability and cost to the consumer, according to its statement. An Authority spokesman also said under current safety standards, the use of bulk supplies of LPG was becoming increasingly problematic, resulting in the public's perception of the risk being greater. Mr Priday however disputed this, and added bulk supplies were cheaper. Mr Li's queries followed repeated criticism of the Authority from Legco members over management standards, public accountability, and a controversial rental review policy. In February Mr Li moved a motion debate in Legco calling for the establishment of a fair trade policy and a commission to rectify unreasonable market dominance and safeguard fair competition, which he lost by one vote.