All I can say about Kimbara is that they were a commonly available Japanese made brand around the 1970s-80s that offered a lot of copies of electric guitars and acoustics some of which were a bit more original. Some of my friends had Kimbara guitars, including a quite nice Les Paul copy.
In the days before the major brands offered their own budget lines and the birth of many of the mid-range brands we now know and love, Kimbara were a cut above many Japanese made guitars although I think its fair to say that today's guitars tend to have a better finish and sound.
Its probably the case that they were made in various factories over the years and were also likely sold under other names in other countries. Of course, back then, Japanese made guitars were mostly at the cheaper end of the market as it was before the days of upmarket products from the likes of Japanese makers such as Yamaha, Ibanez and Takamine.