QC = quality control = quality inspector, checking the quality of incoming materials, process quality and product quality. The job requirements are relatively low.

QE = Quality Engineer = Quality Engineer, to maintain and improve the quality system of the factory and solve problems. Level work requirements are higher than qc. Need a certain technical background and good coordination ability. Experienced and flexible qc can be promoted to qe. College, undergraduate and master do qe.

Quality Assurance = Quality Assurance Engineer. The main responsibility is to ensure the actual implementation of quality control (to ensure that qc does a good job). Generally, there is no difference between qa and qe in the factory, or qe is also the job of qa. If a company has qa and qe and a clear division of labor, it means that the company is very formal and has a certain volume.

SQE = supplier quality engineering = supplier quality engineering. This position and IQC are generally merged into the same department.

: QA is the abbreviation of English QUALITY ASSURANCE, which means quality assurance in Chinese. It is defined as "all planned and systematic activities implemented in the quality management system, and verified as required to provide sufficient trust to show that the entity can meet the quality requirements". Some organizations that implement the quality management system will set up such departments or posts to be responsible for the quality assurance functions required by the quality management system standards, and the personnel who hold such jobs are called QA. Similarly, QC is quality control, that is, inspector; QE is a quality engineer.

References:

Quality Engineer _ Baidu Encyclopedia