Primary Vertical Damper For Train-18, Emu Us & Memu Us Coaches To Drg.No. (727)Train18/Mc/Ac-0-1-009, Item-1, Alt C --- And In Compliance To Rdso Specification Rdso/Cg18005, Rev-02 (Or Latest)---- Or En-13802 (Latest Revision). 1. Firm Has To Submit Oem Drawings With Detailed Dimensions & Characteristics. 2. Type Test Shall Be Conforming To Rdso Cg18005 (Latest Revision) Or En-13802. 3. Service Trials Shall Be As Per Rdso Cg-18005 (Latest Revision). Special Condition : 1. Proto Type Sample (I