I just found this website www.hometolife.co.za which helped explain the process of making these glass tiles a little simpiler.
Heres what they said:
“The temperature sensitive glass tiles are made from recycled glass and the secret to their colour changing antics is in the temperature sensitive film within the textured glass tile which is what causes the glass tiles to change colour.”
I also found another website www.gajitz.com that explained a little about their carbon footprint.
“But even more exciting is the fact that they’re somewhat eco-friendly, using 20%-80% recycled glass.”