Was the 25 mm hotchkiss antitank gun used by the koreans or the japanese?

Answer 1

Further, depending on the use of the 25mm round....

Based on the 25mm Hotchkiss AT round.:
The rimmed 25mm Hotchkiss case was used in the light anti-tank and AFV gun in French service in the late 1930s. This was taken as the basis for the taper-bore experiments (conducted in 1940 by the Danish Larsen company for the French Army), which were then followed up by the Germans to create the PzB 41, the most significant of the Gerlich type taper-bore AT guns. Muzzle velocity of the PzB was in the region of 4,600 fps (1,400 m/s). It worked well, but suffered from a shortage of the tungsten needed in the projectile.


Based on the 25mm Hotchkiss AA round:
During the 1930s Hotchkiss developed a 25mm AA gun which was adopted by both France and Japan, although it disappeared into history after the war.

Answer 2

Both by the Japanese and French