機械附件維修的簡要說明，我司從事的飛機機械部件主要操縱活門、調壓器、滑油系統附件、燃油系統附件，冷氣系統附件，液壓系統附件、起落架系統附件等，維修能力多達幾千項。Brief description: brief description for maintenance of mechanical accessories, mechanical components within maintenance scope of our company mainly include control valve, pressure regulator, accessories of oil system, accessories of fuel system, accessories of air-cooling system, accessories of hydraulic system, accessories of landing gear system. The approved maintenance items amount to several thousand.