It is suitable for the determination of impact toughness of PVC-U, PVC-C, PP, PE and plastic pipes for underground communication pipelines. It is an ideal testing instrument for testing, production units, building materials industry and scientific research units. The height of the machine is controlled by PLC, and the second shock rate is controlled by PLC. Equipped with automatic personal safety protection device (sample room door safety protection, anti electric shock safety protection, etc.). The instrument is easy to operate, safe and reliable, beautiful appearance, exported to Europe and the United States and other countries.