To improve the efficiency of development, members of production, purchasing, quality control, sales, service and distribution joint the design team in carrying out a design review.

Emphasis is placed on audits of, and guidance for, suppliers. Results of inspection of goods purchased are fed back to suppliers, leading to quality improvement.

Detailed checks are carried out to ensure that production plants have been met and that planned level of quality is attained.

Quality information on customers use of the product