The quality of this product is very high.

This pig iron is of high quality and is ideal for steel production.

We are working on the manufacturing of new products.

We are building a factory to manufacture new products.

This plan is optimal for our goals.

I think this plan is the best.

This bridge is made of steel.

This building's structure uses silicon steel.

The manufacturing industry occupies an important part of the economy.

We are considering introducing a new production line.