Can Japanese tourists bring back gas water heaters?

Yes, but it is not recommended. With the size of the water heater, it is definitely impossible to fly, and the safety of random consignment is too worrying. Of course, you can also buy more electrical appliances, color TVs, refrigerators, rice cookers and air conditioners, and entrust an agency to send them back to China in containers. For something worth 200,000 RMB, the logistics fee is about 1.5 million RMB. It's cheaper than buying it home.