Core Viewpoint - The successful entry of four foreign diesel engines into Dalian Bay Comprehensive Bonded Zone for bonded maintenance marks the first bonded maintenance business for engines in Northeast China, highlighting a new opportunity for high-value repair services in the region [1][2] Group 1: Bonded Maintenance Business - Bonded maintenance allows companies to import high-value goods with defects for repair within a bonded zone, alleviating financial pressure and improving repair response efficiency [1] - The recent approval of the fourth batch of comprehensive bonded zone maintenance product catalog by the Ministry of Commerce, Ministry of Ecology and Environment, and General Administration of Customs enables bonded maintenance for aerospace, marine, and automotive engines [1] Group 2: Dalian Free Trade Zone Initiatives - Dalian Free Trade Zone authorities have formed a project task force to provide full-process guidance for the bonded maintenance project, addressing various operational challenges [2] - Innovative measures such as "one-stop" approval and system interconnectivity have facilitated the efficient implementation and regulation of the first bonded maintenance business [2] Group 3: Industry Development and Future Prospects - The bonded maintenance initiative is expected to stimulate the aggregation of related industries such as testing, logistics, technical services, and parts supply, promoting a high-end industrial ecosystem in the region [2] - Dalian Free Trade Zone plans to expand the bonded maintenance product catalog and business scale, aiming to transform the Dalian Bay Comprehensive Bonded Zone into a high-tech, high-value maintenance center [2]