A Doubt on the Position of "Criteria" on the Conclusion of Product Defects

The nature, aims and positions of the current national criteria and trade criteria are clarified with an eye taken to the provisions of pertinent laws. What is unreasonable in concluding product defects by such criteria is pointed out. Furthermore, the reasonable role that such criteria should play in concluding product defects are put forward on the basis of a thorough analysis to the problems existing in theories and the actual practice.