Bankers have told Reuters that such a move would make the zones more attractive to outside investors. And a Hong Kong government official who has been briefed on the issue said: 'Authorities recognize that providing a robust legal framework and infrastructure will attract global companies.  But agreement on this is far from uniform.' As well as bringing in more foreign companies, the move would help promote the wider use of the renminbi, the Chinese currency. China is planning to set up more free trade zones. A Communist Party meeting, starting this Saturday, is intended to be a forum to discuss the issue and to try to make those that have already been established become more attractive.