I have a set of Technic bricks used by an academy for teaching robotics to children.
They are not compatible with Lego (I think that the pitch is 9mm instead of the 8.6mm of the original Lego design).
I would like to buy additional components, so I wonder if there is any known brand or shop that sell these type of bricks (including Chinese manufacturers or AliExpress stores, for example).
Edit: added image. At some components I can read HND##, but searching for HND I only find Haneda airport in Japan 😅