supply of primary spring innerprimary spring inner,primary spring inner for generator car to alstom drg no - 1277143 ver.01 conforming to rdso specific ation no. rdso/2017/cg-01 revision 03 of january 2025. rsk code no. f04. [ warranty period: 72 months after the date of deli very ] ] , primary spring outer for generator car to fiat drawing no 1277142 ver. 01 conforming to rdso specification number rd so/2017/cg-01 revision 03 of january 2025 , rsk code no. f05. [ warranty period: 72 months after the date of delivery ] ] , primary spring outer for chair car for lhb coaches to fiat drawing no 1267411 ver. 04 conforming to rd so specification no. rdso/2017/cg-01 rev.03 of january 2025, rsk code no. f03. [ warranty period: 72 months after the date of delivery ] ]