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　　北京凱蘭航空技術有限公司（以下簡稱“北京凱蘭”）主要從事航空維修與制造業務, 涉及飛機剎車盤系統銷售與機輪剎車維修、航空電子與機械附件修理、航空零部件表面處理、復合材料修理、飛機結構修理、航空零部件制造以及技術咨詢等領域。北京凱蘭自成立以來，不斷提升“整體機輪綜合支援保障服務”核心競爭能力，圍繞北京、上海兩個中心基地，逐步建立輻射全國的綜合支援保障服務網絡，為海航、東航、南航、國航、奧凱、春秋、順豐等航空公司提供標準化、質量可靠、經濟快捷的支援保障服務。

　　Beijing Kailan Aviation Technology Co., Ltd., a subsidiary of CAS (hereinafter referred to as ‘Beijing Kailan’), is mainly engaged in MRO and manufacturing businesses, including the sale and repair of aircraft brake disc system, the repair of avionics and its mechanic accessories, surface treatment for aviation parts and components, repair of composite materials and aircraft structural parts, manufacturing of aviation parts and components, and technical consulting services, etc. Since its establishment, Beijing Kailan has been continuously promoting its core competitiveness in comprehensive services for wheel and brake system, and has gradually established its service network covering the whole country on the basis of its central bases in Beijing and Shanghai. It provides standardized, high quality, economical, and fast support service to Hainan Airlines, China Eastern Airlines, China Southern Airlines, Air China, OKAIR, Spring Airlines, and SF Airlines, etc.