Product quality refers to the use value of the product and its attributes; while the quality of work is the guarantee of product quality, which reflects the degree to which the work directly related to product quality guarantees the quality of the product.

Extend quality control to the whole process of the product life cycle, emphasizing the participation of all employees in quality control.

The process of identifying quality requirements and standards for a project and its deliverables, and preparing countermeasures to ensure compliance with quality requirements