Ok my mistake you made them IN HOUSE

So the question still is do they support 15 and 24K?, if not can you have your  local supplier of the scaler boards change the firmware to do so?

The driver boards are fully automatic sensing what input is being provided as well as sensing if the input is from the DVI or the VGA. They also "wake up" on signal input and "sleep" when the signal is missing. They sense all formats.

I don't have the capacity to make enough to sell and certainly not to ship them from Shenzhen as they are just too fragile with no casing and the packing required would make the shipping far too expensive.

As you probably already know these are simply not available. Another supplier that was at Pinfest has tables made in China and their supplier was also unable to source 4:3 monitors as they just are not made by the mainstream manufacturers any more.

If you have a need for them in Shenzhen I'm happy to discuss your requirements.