Technical parameters refer to the relative data obtained for a certain thing in the specified inspection environment, usually refers to the performance test report made in the design or production process, including physical parameters, performance indicators and reliability parameters, which describes the specifications, performance, function, structure, size, use environment and other specific data or indicators of a product, equipment, parts or components. These parameters play an important role in the process of product design, production and use, directly affecting the performance and quality of the product, but also an important consideration for users when choosing and using the product.