Who is TONE?

[Horsey McHorseface]

Just curious. You often see the TONE logo on Japanese modified/tuned cars, but who are they? A tuner, garage, or what?
A quick google turns up nothing.

[Doofus]

https://www.tonetool.co.jp

[Horsey McHorseface]

Thanks Doofus. Mystery solved.

[adamlstr]

Horsey McHorseface said:

Thanks Doofus. Mystery solved.

...anticlimactically.