质量可分为三类:产品质量、工作质量和工序质量。产品质量是指产品适合人们需要所具备的特性,主要是指可用性、可靠性、经济性和外观等所达到的程度。它通常可由标准、规范或一组指标来衡量。工作质量是指企业的管理工作、技术工作和组织工作对达到产品质量标准和提高产品质量的保证程度。工序质量又称 Quality can be divided into three categories: product quality, work quality and process quality. Product quality refers to the characteristics of a product that suits people’s needs. It mainly refers to the extent to which availability, reliability, economy, and appearance are achieved. It can usually be measured by standards, specifications, or a set of indicators. Work quality refers to the degree of assurance that the company’s management work, technical work, and organization work meet product quality standards and improve product quality. Process quality is also known as