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+Article 18 4. |
Article 18 4.If the contract provides for a future change of the product or price, or a discount, this shall be indicated on the bill together with the date on which the change takes place.
1. Visão geral
1.1 Referências1.2 Requisitos identificados1.3 Normas relacionadas2. Requisitos identificados
3. Normas relacionadas
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