北京凯兰航空技术有限公司（以下简称“北京凯兰”）主要从事航空维修与制造业务, 涉及飞机刹车盘系统销售与机轮刹车维修、航空电子与机械附件修理、航空零部件表面处理、复合材料修理、飞机结构修理、航空零部件制造以及技术咨询等领域。北京凯兰自成立以来，不断提升“整体机轮综合支援保障服务”核心竞争能力，围绕北京、上海两个中心基地，逐步建立辐射全国的综合支援保障服务网络，为海航、东航、南航、国航、奥凯、春秋、顺丰等航空公司提供标准化、质量可靠、经济快捷的支援保障服务。

　　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.