After half a year's trial, the polypropylene capacitor membrane prepared by Sinopec Zhongyuan Petrochemical Co., Ltd. has been tested with good effect, and the ash content reached international standard, which can be substituted for imports. It indicated that the high purity polypropylene capacitor membrane material of Sinopec Zhongyuan Petrochemical Company has filled in the blank in China and has achieved a major breakthrough in development of new products. 　　Capacitor membrane material with high transparency, light weight, easy processing, high intensity, acid and alkali resistance is widely used in consuming electronics, hybrid electric vehicle, power grid construction, green lighting, etc, which has a broad market prospect.