This machine is produced by Wintime Machinery Co., Ltd. The operation of this machine is controlled by the computer, driving with the servo motor and transmitting precisely with ball screw.. It is used to test the tension springs and compression springs. These springs can be heavy duty springs. the specification of this kind of machine is different. The producer can change the change the machine basing on the need of customers. The Accuracy is ±0.5%,which is relevantly high in this aspect. After the user finishes the testing, the data can be printed. This machine also can test the gas springs. this kind of machine is popular among our clients, which is not only in the domestic market but also in the outside world such as Japanese NHK, American Alco and German GERB.