Article 712. The right of the contractor to retain.
If the customer fails to pay the established price or other amount due to the contractor in connection with the performance of the contract, the contractor has the right to withhold the result of the work, as well as the equipment belonging to the customer for processing (processing) things , the remainder of the unused material and other property of the customer that came to him until the customer pays the corresponding amounts.
Links to other articles of chapter 37. Contract: