· Customized parameters: basically all are customized products. You need to confirm the length of the boom (radius, the longer it is, the weaker the lifting weight), the lifting height and the rotation angle (usually 270°, 360°). · Lifting configuration: usually does not include hoist. You can choose a hand chain hoist (cheap), a hand trolley + hoist, or an electric hoist (labor-saving). · Installation foundation: The column type requires a concrete foundation and pre-embedded anchor bolts in advance. Be sure to confirm the ground conditions before purchasing.