The provincial government of Guangdong Province only rewards administratively recognized well-known trademarks in China.
Each town will award rewards based on actual conditions. Zhongshan, Foshan, and Dongguan all award hundreds of thousands.
Some have published documents, but it is not clear whether some have published documents. After all, government documents are not always available online and cannot be found. You can find out by asking the local industrial and commercial bureau.