A shell: light aluminum alloy shell, lightweight and rugged, high heat, sealing the entire design suitable for
operating in the disadvantaged environment.
　　Second, the reverse protection device: a special electrical installations, power supply wiring error, the circuit can not control the action.
　　Third, the limit switch: hanging heavy objects hanging there under the root limit switch devices, so that the motor stopped automatically to prevent the chain beyond, to ensure safety.
　　Fourth, 24V/36V device: When in operation in case of leakage switch to prevent the accident.
　　Fifth, next to the magnetic braking device: This device can cut off the power supply in the moment when the brakes.
　　Sixth, the chain bag: lightweight, attractive, durable.
　　Seven, the chain: the import FEC80 chain of super-alloy steel heat treatment
　　VIII hook: Forging into a model, the strength and fracture toughness is not easy, can hook under the 360-degree rotation with the safety tongue in order to ensure safe use.