1 has different meanings.

QA is quality assurance: quality assurance engineer, whose main job is quality review and product review. QE is a quality engineer: a quality engineer, who is mainly responsible for establishing, analyzing and improving quality control procedures.

SQE is a supplier quality engineer: supplier quality manager, responsible for supplier control. QC is quality control: quality inspector, who mainly carries out quality control according to the quality documents specified by QE.

2, the work content is different

Quality assurance QA focuses on process system management, mainly focusing on quality inspection activities afterwards; QE pays attention to the quality engineering management of production process; SQE pays attention to supplier quality management; QC focuses on product quality assurance activities in advance, focusing on prevention.

3. Different grades: QE and SQE are higher than QA and QC.

Extended data

The main responsibility of QA is quality assurance. When setting up this kind of personnel, the most important thing is to consider whether his knowledge, skills and quality meet the requirements of the organization and post. These requirements are based on differences in corporate culture and maturity.

For example, for an enterprise with weak sense of cooperation and strong bureaucracy, communication may be an important quality requirement of QA; For enterprises with low maturity and no institutionalized standard process, understanding the business and mastering QA professional knowledge may be the most important criteria for choosing QA.

QE, full name of quality engineer, Chinese name: quality engineer. Responsible for product quality control in the whole production process from sample to mass production, seeking to improve product quality through testing, control and improvement, solving quality problems in product production, and handling quality anomalies and quality improvement.

QC is the abbreviation of English quality control, and Chinese is "quality control". In order to meet the quality requirements, the organization will set up quality management and quality control departments, and arrange quality control personnel engaged in quality control functions. Generally, quality control functions are shared by quality inspectors (QC) and quality engineers (QE).

SQE is a supplier quality engineer. Responsibilities: 1, responsible for ensuring the quality of raw materials supplied by suppliers, and timely feeding back the problems caused by the quality defects of materials supplied by suppliers to suppliers for improvement; 2. Be responsible for tracking and confirming the supplier's improvement report and implementation effect, and conduct on-site audit and inspection and guidance when necessary; 3. Be responsible for formulating inspection specifications and inspection plans of incoming inspection departments, and provide timely training and guidance to inspectors.

Baidu encyclopedia: QA

Baidu Encyclopedia: qe (Quality Engineer)

Baidu encyclopedia: QC

Baidu encyclopedia: SQE