Two prototypes of the Type 90 were completed in 1980, both armed with a Japanese 120 mm gun (produced by Japan Steel Works Limited) firing Japanese ammunition (produced by Daikin Industries Limited).
Prva dva prototipa napravljeni su 1980. i bili su opremljeni japanskim topom od 120 mm topom (proizvod / la Japan Steel Works Limited), a streljivo (proizvod po Daikin Industries Limited)je dovršeno 1982 godine.