Electronic components are an important component of mechanical manufacturing products. Studying and analyzing their impact on the quality of the final product, determining pre use screening and control methods, has long-term development significance. Mechanical products refer to the finished products or accessories provided by mechanical manufacturers to users or markets, such as cars, engines, machine tools, etc. They are all called mechanical products. According to traditional customs, any mechanical product can be regarded as composed of several components and can be divided into different levels of sub components (also known as parts or components) up to the most basic unit of parts.