Based on the information available, here's a detailed explanation of how Competence Techno Engineers Pvt. Ltd. may provide a “one-stop solution“ for CNC drilling and milling requirements as per RDSO's STR (Schedule of Technical Requirements). The core of the matter is that RDSO does not approve the machine itself, but rather the vendor who uses the machine to manufacture a specific railway component. An STR for a component (e.g., fabricated switches, locomotive parts, etc.) will detail the essential machinery a manufacturer must possess to be considered for approval. Competence Techno Engineers' business model appears to be aligned with this process. They position themselves as a supplier of the necessary manufacturing equipment, enabling other companies to meet the stringent technical requirements laid out by the RDSO.