Greater Beijing Region Expressway Co, partly owned by locally listed Oriental Metals (Holdings) and Jinhui Holdings, has amended its asset portfolio in a bid to speed up its listing in Hong Kong. The move will enable the Hong Kong-based toll road operator to meet requirements set down by the stock exchange exempting infrastructure companies from the normal three-year earnings track record. An informed source said Greater Beijing, which aims to raise between US$150 million and $200 million, will include one more toll road now under construction, increasing its portfolio to six roads. It has three roads in operation - the Baoding-Shijiazhuang and Zhuozhou-Baoding sections of the Beijing-Shenzhen Expressway and Tianjin south section of the Beijing-Shanghai Expressway - and three under construction. The exchange wanted a balance between operational toll roads and roads in the pre-construction or construction stage, the source said. The exchange has asked infrastructure companies to have a majority of their projects in the pre-construction or construction stage in order to fulfil the exemption requirement. The source said the company aimed at a listing by June, after it was postponed from last month. He said Greater Beijing also wanted to avoid a direct clash with other toll road listings. H-share candidate Zhejiang Expressway Co is having a public offering in Hong Kong and an international placement to raise as much as HK$2.95 billion. Another H-share candidate, Nanjing-Shanghai Expressway, or Ninghu, is planning to go public next month. Greater Beijing was formed by a consortium of Hong Kong, mainland and Singapore investors about a year ago. It operates and maintains 10 toll expressways linking Beijing with Tianjin and Hebei provinces. China Securities, better known as Huaxia Securities, one of China's largest state brokerages, is one of its shareholders. Although Beijing vice-mayor Zhang Baifa has said the soon-to-be-listed Beijing Enterprises Holdings - the city's window company in Hong Kong - would take a strategic stake in Greater Beijing, the source said nothing had been finalised.