Power fittings are widely used in the process of high-voltage power. They also have many different types, which can meet various needs in use, so as to provide certain guarantee for our combination and connection of power system devices, and also play a certain protective role. Moreover, due to the high pressure in operation, it requires us to focus on quality when purchasing and returning products, so as to avoid problems in the use process and cause many unnecessary troubles and losses for the later application process. In addition, the ball joint, support frame and other products also have certain differences in characteristics and functions due to their own differences in production and design. We should also choose and buy according to our own actual needs, so as to give full play to its value in use, better provide services for us and promote the smooth progress of high-voltage power.