Which category has several cranes

The crane is in a range of vertical and horizontal movement of goods hoisting machinery, and the intermittent movement of the crane operation cycle characteristics of the work.
Crane ask:
Which category has several cranes
Answer:
The crane is in a range of vertical and horizontal movement of goods hoisting Manual stacker  and the intermittent movement of the crane operation cycle characteristics of the work. By Application: General cranes, construction cranes, metallurgical cranes, railway cranes, port cranes, shipbuilding cranes, deck cranes. By tectonic Category: bridge type cranes, jib type cranes, rotary crane, non-rotating cranes, stationary cranes, crane operation, operation of cranes and rail and non-rail line. Common Model: electric single and double girder, single girder, double girder gantry, Electric pallet truck, electric single girder suspension, single and double girder grab, explosion-proof single, double girder, metallurgy single, double girder, semi-gantry cranes, manual single beam, suspension, bridge machine, etc.