ISO9000: 2015 Quality management, coordination and activities of the command and control organization in terms of quality. The definition of quality control is: "Part of quality management, dedicated to meeting quality requirements."

According to the control characteristics and sequence of products in the process, product quality control can be divided into four stages: Incoming Quality Control (IQC), In Process Quality Control (IPQC), Final Quality Control (FQC) And Outgoing Quality Control (OQC). The organization will set up quality management and quality control departments to meet the quality requirements, arrange quality control personnel for quality control functions, and usually the quality control function will be shared by quality inspectors and quality engineers.