1. Compact Structure, small size;
2. Easy mounting, varied types;
3. High reliability, long service life;
4. With the function of ascending, descending, thrusting, overturning;
5. Can be applied in one unit or multiple units;
6. Can be drived by electrical motor or manual force;
7. It is usually used in low speed situation, widely used in the fields of metallurgy, construction, chemical and mechanical industry.
