The workshop has now been approved for more than 500 maintenance capabilities, 3300 part numbers for over 18 ATA chapters. The current annual maintenance volume is about 3,000 pieces. The shop is equipped with a complete set of testing equipment such as pneumatic small flow test bench, comprehensive test bench for oxygen components, hydraulic comprehensive test bench, and hydraulic rotary test bench, which can meet maintenance requirement for components such as 3215618-X anti-ice valve, 3285862-X Precooler valve, 3289630-X start valve, 398908-X temperature control valve, 746A0000-X pressure regulating valve, MC / MF / MXP series oxygen mask parts, 57186-X hydraulic pump, 66087 hydraulic pump, 887477 hydraulic pump, hydraulic fuse, providing customers with better and more efficient services.