They are not mere ceramic. Rather they are made of Cement, Baby jelly and Sand along with synthetic oxides for the composition of tiles. The are cst from the locally available clay that is first burnt and then legalized. It is the combination of the base colors with typical conventional flora and line drawing designs that sets them apart from the modern versions in the market. Machine Polish is not needed for these tiles, manufactured in the early tones and configurations. It can be cleaned with husk initially.
Most popular manufacturers, remaining are ess entially was popularised in the 1970s in the field