... goods' safety during the lift and down;2. All electric connector with water-proof and dust-proof design;3. Better Stability;4 ... the working life;6. Ergonomics design and shock absorption configuration, with more comfortable operation;7. Buffering design for lift cylinder, to ... downing,to ensure the safe for products;8. Electromagnetism braking with Lose-electric type have reliable braking result, it's ...