JNF assure an after-sales support service which will ensure compliance with the contract made within two years of receipt of the goods for mobile products and five years for immovable products. Warranty is excluded in cases where damage is the result of improper use, improper installation, misuse, transport damage, unauthorized technician intervention, painting or finishing of materials, use of improper chemicals, lack of maintenance as well as interventions or modifications made by customers or third parties, without prior agreement of JNF. Nonconformity of the product must be notified in writing as soon as possible after detection, together with information on purchasing documentation. The possibility of verification and detection of the existence of the notified anomaly shall be given. A defective product is considered to be defective when it does not offer the expected safety and operating conditions, taking into account various circumstances, including its presentation, its reasonable use and the moment of its normal use. A defective product is not considered to be defective simply because a more upgraded product is subsequently put into circulation. In case of non-compliance, the consumer is entitled to have the product in question replaced by repairing it or replacement with a similar or possibly superior product, appropriate price reduction or termination of the contract. The manufacturer may refuse the normal client warranty rights if it proves that the state of the art or technology at the production time of the product doesn’t exist way to detect the defect.