Article 1880

The parties may agree that the person with whom the supplier has contracted shall prefer the supplier when acquiring certain supplies.

A person who has agreed to prefer the supplier shall promptly notify the supplier of the terms offered to him by third parties and the supplier shall, under pain of the loss of right, declare promptly whether he intends to avail himself of the preference.

An agreement to prefer, the supplier shall not be effective for more than three years.

It shall be reduced to three years where it has been made for a longer period.