Quality management concept Analysis: SPC focuses on the control of manufacturing process variation at its core to improve the quality dilemma of domestic enterprises. This article revolves around SPC (Statistical Process Control), analyzes its core concepts... Statistical Process ControlManufacturing process variation From quality management to the story of Bian Que: Dilemmas, opportunities and choices faced by quality professionals The author of this article shares the chance and insights of stepping into the quality management industry... Quality management conceptPersonnel skill level