The EMS aerial conveying line is an aerial suspension conveying system that operates according to the preset track in the air, and multiple carriers work independently. Adopting modular design, it can be designed into many operation forms according to customer needs, and the layout is flexible. It is equipped with a lifting unit of a spreader, which can form three-dimensional conveying in the horizontal and vertical directions. The spreader can automatically adjust the height according to different workpieces and different processes. Greatly optimized ergonomics. It has the characteristics of PLC control, sliding contact line power supply, bus control and wireless control, frequency conversion speed regulation, etc., with organized production, automatic transportation, air storage, automatic accumulation, automatic shunt and confluence, automatic address recognition, precise positioning, fault self-diagnosis , remote monitoring and other functions. EMS aerial conveyor lines are widely used in automatic production lines for welding, painting and final assembly in the automotive and auto parts, construction machinery industries, and can be widely used in agricultural machinery, home appliances, tobacco, warehousing and logistics, motorcycles, metallurgy, machining, etc. industry and field.