Which is better, Linnei or Ruimei?

The two brands of gas water heaters are almost the same. I bought a water heater to popularize science, although I didn't buy the last two brands. . . The forest is Japanese and Ruimei is American, but it sells better in China. Ruimei seems to be mainly engaged in large-scale commercial projects in China. There are many large boilers in airports, hospitals and hotels, and small gas water heaters are more expensive. There are not many in China, and they are basically in European and American markets.