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Miku uses Yamaha Corporation's Vocaloid 2, Vocaloid 3, and Vocaloid 4 singing synthesizing technologies, and Crypton Future Media's Piapro Studio, a standalone singing synthesizer editor.
from Wikipedia
Got a lawn mower and a bass guitar. Seriously they do everything.
And for the rest (heavy construction work vehicles, vibrators, hoovers, trains, ...) there is Hitachi
Also see Hitachi if you want to clear some mines, shoot mortars, or support artillery.
See Hyundai if you want a navy though http://naval-special.hhi.co.kr/en
Along with electronics, Panasonic also made bicycles for the North American market until the late 1980s.
And I think Kawasaki still makes vehicle audio systems.
