I'm an Aussie living in China, I also have property in Thailand, the power outlets are usually the same as the US, the appliances I buy in China a generally these 2 prong flat type. In saying that you can easily buy adapters in Thailand lol their usually made in China. Thai Import duties are all over the place, better to buy in Thailand.
China has been the same, pure discrimination. Its actually illegal to refuse entry to foreigners however the owner still has the last say. Double standards. Grrrr