Non-standard parts:Non-standard parts are mainly the country did not set strict standard specifications, there is no relevant parameters, free control by the enterprise of other accessories. There are many varieties of non-standard parts, there is no very standard classification at present, are generally developed by enterprises according to market needs and their own brand development, and extend the vitality of products and independent research and development.This product may be the first time a customer sees a company/brand. It connects customers with the company/brand and impresses them.VIDEO 2022-04-21 9:46:51.