Japanese medium tank
Type 3 Chi-Nu
WW2:
Type 97 Chi ha No. built: 1162 (including Chi ha Kai)
Type 89 Chi ro No. built: 404
Type 3 Chi nu No. built: 144~166
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Chi Nu
Gun: type 3 75mm tank gun
Before the war:
144~166
After the war:
900~1500 (estimate)
Since chi nu was already built tank wasn’t that expansive it is likely that Japan will keep producing it until they find a replacement.
In service: 1944~1960?
Location: probably all spread out in the Japanese empire

Japanese heavy tank
Ju-To
WW1: type 91
Between WW1 and WW2: type 95
Type 91 No.built: 1 prototype
Type 95 No.built: 1~?
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Ju-To
Gun: 105mm 92L/45
Before the war:
(This concept never existed)
After the war:
20~200(estimate)
Even though this concept never existed, Japans lack of heavy tanks meant that they were in the need for heavy tanks to defend their land outside of their Japanese mainland. Since they can’t keep relying on importing from Germany, it is likely they managed to work with Germany and creating a proper Japanese heavy tank eventually.
In service: 1947~1960
Location: China, Korea, Manchuria, modern day Vietnam