Advantage Based on FEM European standard and German DIN standard design and manufacturing, German low-noise motors, aluminum housing hard-ended reducer, clutch overload protection, safe, reli-able, durable, environment friendly energy,attractive appearance, Feature 1. Intelligent monitoring and recording instrument; 2. Long life Schneider electric components; 3. Wiring reasonable, overhaul electrical box conveniently; 4. Safe and convenient heavy air connector; 5. Imported high strength steel wire rope; 6. German high strength hook according to DIN standards; 7. Three in one hard surface, two-speed lift drive units; 8. Three in one hard surface trolley with frequency conversion drive unit; 9. Automatic wear detection brake; 10. Four-stage adjustable rotation lifting limit switch.