The town's economy is largely agricultural, with rice as the principal product.

The principal products raised upon it were tobacco, corn, and wheat.

A good business, he said, typically is a market leader in its principal product or service.

Their principal products are industrial pumps and flow control systems.

Farming was an early industry, with hay and cattle the principal products.

Its principal product, nuclear reactors, is no longer in demand.

However, there have been mines where silver was the principal product.

The company's principal products were ham and bacon for the first seven years.

We are in favour of price cuts for the principal products.

Discussion question: What are the principal agricultural products of your country?