We know (thanks to Rich) from History of Japan mint (published in 1953) that: 'Since the equipment and technical skills in Manchukuo were far below that of those in Japan, all Manchukuo orders were made by the Japan Mint. The numbers of medals needed steadily increased, so in Showa 18 [1943] some Japan Mint technicians were sent to the Manchukuo Mint to assist them in making the lower classes of the orders.'
So it is possible that some orders in four lower classes were manufactured by Manchu mint between 1943 (unknown month) and 1945.
As for the badges - many (but not all) were also manufactured by japanese firms.
Especially badges with difficult enamel work
Cheers,
Nick
P.S. This thread will be continued in Saturday due to some tech problems