why must 华资?anyway, I think BOC and 建设银行 have branches here, not sure they have investment business.
some Chinese companies here may do a bit trading like 中能 or 国家资源公司(something like that, don't know the exact name)....
BOC的投行叫中银国际,建行的叫中金,招商的叫招商证券。工、农应该没有投行业务。