Because the crane mostly belongs to non-standard products, please consult in detail before ordering, confirm the hoisting tonnage, the span you need, lifting height, floor length problem requires supporting electric hoist type and brand, and the bearing rail beam cement beams or steel beams, bearing rail beam to the lowest point of the roof the distance, so as to avoid mistakes or accurate quotation. Price, image, product attributes, for reference only does not make the transaction price, specific to the kind prevail.