The film thickness of the film is mostly hindered by the film; Thin-film film lightning evaporation, magnetron sputtering and other process technologies. The thin film film can achieve an accuracy of 1/10,000 and an accuracy of 1/10000. The resistance of the thin film film can make a very low temperature coefficient, so that the electrical resistance becomes very small with temperature, and the obstacle can be relied on. Therefore, thin film film lightning resistance is often used in all kinds of instruments, medical equipment, lightning sources, such as the power of electric light, lightning energy digital products, etc.