Made in Japan? No, made in China?

They're doing it because of all the bad press China has received lately due to the contaminated food and lead based paints.

So instead of fixing the problem, they're just disguising it.

Distinguishing is not that difficult for Japanese.

Japan has less natural resources. Japanese know domestically-produced foods are not cheap. If Japan produced those products, like in your link, with domestic foodstuffs and ingredients, the price would be extremely high. People can know those are not made in Japan (by the price). And consumer affairs bureau and many private food inspection institutes will take an action soon (checking them by DNA composition).

I guess these products are exported to Hongkong and Taiwan a lot. And to the US, too. I wonder how they distinguishing these products.

And I also want to ask why these Chinese companies doing it?

Is this a part of 沒問題 culture? They often say 沒問題沒問題, 沒關係，沒關係 everyday (sorry, kidding).

Do you have the news in English? If this is real, I think it is overated. So far from my experience, I have not seen such thing yet but I do seen products that are produced in a few countries printed with Japanese characters. The origin of the products are printed very small as they are not origin from Japan. I can't get the clue why must they do this. They make me feel like Japanese is going to be our lingua franca(I hope so).

Its funny, because for those of us old enough to remember it, it was Japan that once disguised the real origin of their goods.

We call it; "what comes around, goes around".