re write it ib different words

4- Is the owner right in demanding the price reduction of the $30,000 Frigidaire? In our opinion the owner doesn't have the right for reducing the total contract amountby $30,0000 because the supplier has provided the cooling device as requested in the contract. The cooling device is brought from a special industrial Frigidaire in Germany which is meeting the contract. In this type of contract (turnkey contracts) the owner does not have the control over the contractor for supplying the equipment the owners wish but only can argue if the supplied equipment does not meet requirements of the contract