Main technical parameters of SC series construction hoist Haishan construction hoists are widely applied to construction sites such as industrial and civil architecture, bridge, underground, large chimney and ship industry, etc. It is used for the vertical transport of materials and persons and also used in such different occasions as warehouses, high towers, etc. Haishan construction hoists are equipped with frequency converters and can be variable speed. Its load can be 1-4 tons. Max. Height can be 300m.