To ensure that the production process is in a controllable state as well as to guarantee the quality of production process, BSAZ conducts analysis, diagnosis and monitoring to all the techniques adopted in production process, analyzing process and services which may directly or indirectly influence product quality. What’s more, BSAZ takes key control of product characteristics that are not easy to analyze, particular skills required for equipment maintenance and operation and particular processes. Deficiencies are dealt with timely and process parameters are monitored, controlled and verified on a reasonable frequency in production process so as to ensure that all equipments, operators and other conditions meet the requirements of product quality.