Revision of the code for clean operating room from the point of view of quality control of modern products

Expounds the revision principles of the code from the three ideas of quality control of modern products, i.e., process control, total control and key point control. The revised code requires a decreased grade of terminal filters and reduced cross-section area of working zone, air supply velocity and air change rate. The code adds the appendixes of project acceptance, inspection and assessment to enhance process control.