Plaster of paris is normally known as POP, as per the Indian tradition it is observed that it is widely used for the making of ranges of Idol products. The technique of POP idol making has been practiced from long generation in India which has huge demand during the festivals of the particularly named God/ Goddess.
Aligarh is known as one of the commercial center of Uttar Pradesh which is generally known as the center for statues and brass hardware. This city is known as a center where manufacturing and processing are considered to be of importance. It is also known as the big center for zinc die casting where thousands of inflatable hot chamber machines are present. The district is famous for the traditional handmade crafts practiced from a long generation.
For more details:
https://www.dsource.in/resource/idol-making-aligarh