Quality assurance contains administrative and procedural actions applied in the level organization so that requirements and goals for the product, service or process can be satisfied. It is the systematic measure, comparison with the standard, observation of procedures and the associated feedback loop that confers error prevention. This may be contrasted with quality assurance, which is concentrated on process production. Quality assurance includes two rules: suit for purpose (this result should be appropriate for the specified purpose); and good first experience (mistakes should be eliminated). QA includes administration of the level of raw materials, assemblies, products and elements, services associated with production, and administration, manufacture and inspection procedures. These two principles also appear before the scene of developing (technology) the new technical product.