CONCORD CONTROL SYSTEMS LIMITED We are an Indian Railway/Research, Designs, and Standards Organization (RDSO) approved source for manufacturing various Electric and Electronic ranges of products and also many more products are under development. We are an ISO: 9001:2015 certified organizations by TUV- SUD South Asia Pvt. Ltd. Our manufacturing should have zero defects so that our product should match the global standards. We always keep in mind that processes we are using in manufacturing should be environment friendly. Concord Control Systems Limited is a Lucknow-based leading manufacturer of Electrical and Electronics Products for Indian Railways.