In India, Mittal Engineering is a well-known Brass Coils supplier. Brass is a metal alloy made of zinc and copper, the ratios of which can be changed to produce a variety of brasses with different characteristics.
https://www.meicopper.com/brass-coils/

India's top copper circle Supplier is Mittal Engineering. The amount of resistive heating brought on by the high alternating current is restricted by the use of copper coils, which are maintained cool by water to prevent melting. A dependable producer in India

https://www.meicopper.com/copper-coil/