I think for TTs from western banks to your Chinese bank account there will be a form from your western bank required to be filled in by yourself.

Full name, your Chinese bank account number, the postal address and swift code of the head branch of your bank in that province will be necessary. Your branch need not be the head branch. Only head branches have swift codes. Fixed fee = 20 GBP/transfer. You could transfer 20,000 GBP FOR 20 GBP. Allow 3-4 weeks for the transfer to arrive from the time you send your transfer request form by air mail letter to your TT provider back home. Sell part or all of your GBP at your branch for RMB whenever you wish to do so. No fee for currency conversion.

http://www.boc.cn/en/aboutboc/ab6/200812/t20081216_494257.html

http://www.boc.cn/sourcedb/whpj/enindex.html