This type of design requires certification of all product production following the "selection" and "determination" activities as specified in the design. A proportion of the total interest items to be tested, which can include testing all items in the production interest (100% test), for example based on the homogeneity of the items in the interest and, if necessary, the application of a sampling design. If the product of the "determination ", "review " and "decision-making " operations is positive, all items in the interest may be considered as certified, and if the certification design specifies the mark of conformity Insert on them.