Light --- small size, light weight, convenient operation and high reliability; Simple --- small volume hydraulic device, compact structure, simple operation; Economical --- imported seals, leak proof, reliable, maintenance free, easy to disassemble; Safety --- The lowering speed is controllable, and the internal overflow valve is protected against overload, which is solid and durable; lowering speed is controllable overload protection sturdy and durable Comfortable --- The design of the handle conforms to the principles of ergonomics, and the operation is simple and comfortable; Labor saving: two nylon guide wheels reduce operation fatigue and protect the load wheel and pallet.