Answer
A plummer block is typically made of cast steel or cast iron, but can also be made of aluminium, bronze and other metals.
A.It can be one of several types...
A.A plummer block is made of cas...
A.A plummer block is used to pro...
A.A broom machine functions over...
A.A broom machine is made up of ...
A.•Fully-automatic broom making ...
A.Of course, UPVC is an engineer...