They are both in the same exam.

I took it twice in China and 1 time in Japan.

In Japan, it is called JLPT.

Because it is a global exam, there must be organizers in the country where the exam is held. I don't want to lose people all over the world for this exam, do I? Not that many people, are there?

China's is the Ministry of Education.

Search for keywords on Yahoo Japan

JLPT of Japanese proficiency test can be found out.