Bakelite is a thermosetting plastic. It is a very good insulator of electricity and also a poor conductor of heat.
Hence, it is used for making the outer case of the electric switches.
PVC (polyvinyl chloride) is a thermoplastic material, widely used in making pipes.
Melamine is a thermosetting plastic that can withstand high temperatures without losing their shape. Hence, used in fireman suit.
Thermocol is a form of polystyrene. It is lightweight and durable. It also has high shock-absorbing property.
Hence, it is widely used to pack delicate items.