Self-leveling mortar needed in Albania

The first is the self-leveling for maximum thickness up to 2 centimeters of finished material.(0.5 -2 cm max)
I want to be a traditional slimming substitute with a very low cost as a product, strong and resistant. The placement of the material directly will be applied to porcelain or ceramic tiles according to customer preference.
The second one that I'm really interested in is the self-leveling for the heating system. To be as transparent to heat. The maximum thickness I want to be 4 centime