It can provide scientific, reliable and automatic methods for the testing and checking of these pressure relays, and can meet the need of use and service of trains in our country.

• 从而为此类继电器的出厂性能检验及性能测试提供科学的、可靠的、自动的测试手段,以满足我国铁路机车使用及维修的应用急需。