Group 1 - The core viewpoint of the article highlights the significant growth and competitive advantage of Xiamen Aircraft Engineering Company due to innovative customs policies that support bonded maintenance outside the comprehensive bonded zone [1][2] - During the 14th Five-Year Plan period, Xiamen has completed maintenance on a total of 998 aircraft, ranking first in the country [1] - The introduction of the "bonded maintenance outside the comprehensive bonded zone" model allows aviation maintenance companies to enjoy tax refund and guarantee exemption policies, saving companies approximately 2.2 billion yuan annually [1] Group 2 - The Xiamen aviation maintenance base has developed a comprehensive industrial structure that includes major aircraft overhauls, passenger-to-freighter conversions, business jet refurbishments, engine and landing gear maintenance, aviation electrical repairs, parts manufacturing and maintenance, and talent training [2] - The total value of imports and exports under the supervision of Xiamen Customs for bonded aviation maintenance during the 14th Five-Year Plan period reached 558.68 billion yuan, with an average annual growth rate of 255.24% [2]

Core Viewpoint - During the "14th Five-Year Plan" period, Xiamen has completed 998 aircraft maintenance operations, ranking first in mainland China [1] Group 1: Regulatory Innovations - Xiamen Customs has introduced a "bonded maintenance outside the comprehensive bonded zone" model, allowing aviation maintenance enterprises to enjoy tax refund and guarantee-free policies [1] - This innovative regulatory model can save enterprises 2.2 billion RMB in guarantee amounts annually [1] Group 2: Industry Competitiveness - The new regulatory model has led to lower operational costs and higher efficiency for companies, enhancing their competitiveness in the industry [1] - Some maintenance orders for Xiamen Aircraft Engineering Company have already been scheduled until 2030 [1] Group 3: Business Expansion - Xiamen Customs has integrated bonded logistics with bonded maintenance, creating a new business model of "bonded warehouse + bonded maintenance" [1] - The scope of this business has expanded from complete aircraft maintenance to include engine, landing gear, and component repairs [1] Group 4: Industry Structure - The Xiamen aviation maintenance base has developed an industrial structure that includes major aircraft overhauls, passenger-to-freighter conversions, business jet completions, engine and landing gear maintenance, aviation electrical maintenance, parts manufacturing and repair, and talent training [1]