Funds are managed by banks and traded through their platforms. Guangdong Bao Yue specializes in gold trend analysis, consultation and training.
Log on to the website of Shanghai Gold Exchange and check the members, which is more reassuring. Moreover, this company has been established for more than ten years and has a good brand and reputation.
I have a friend who opens an account in their company to speculate in gold, and receives their short messages about gold trend analysis every day. There is also a free market system and sometimes training. I seem to hear that the service is quite good.