Thermochromatic sheets/ Temperature -sensitive sheets

Hi there can anyone tell me the specs available for any ready-made therchromatic plastic sheets and all and perhaps where I can get them from? Tried matsui Corporation and they’re sending me ink samples but not finished product. Any ideas about:

  1. standard sheet sizes
  2. max. bending radius, max allowable weight (ie. can you walk on it)
  3. edge conditions, fixings.