The integration of trade and disintegration of production is the competitive marketing strategy to prevent from the high risk of investment for economic production of railway business. First it is requested to satisfy the customer and government’s safety regulations. Second qualified business records are the key issue for capability survey. All research and development are based on customer’s requirement that includes carry capacity, speed and passenger safety. The safety and reliability of life and finance are the research and development strategy. AIDC has sufficient experiences from our customers for past 20 years and is working on the new business development. AIDC railway core business and capacity include communication system, platform screen door, signal control system, system verification and validation, ITEM, driver simulator, maintenance management system. Customer list includes TRTC, DORTS, KRTC, KMRT, TRA, BOHSR, TRSC, Siemens, Hitachi, and Marubeni Co.