The general flow crane is double hook, quick, slow hook.
But the usage rate of the big tonnage crane is very small.
It's mainly used in small cranes.
Quick hook is a single strand of wire rope, which can be improved quickly and efficiently.
The slow hook is based on the weight of the lifting, and a lot of times you need to rewire the wire so that you can lift the cargo.
The biggest is the 7-8 multiplier, which mainly increases the heavier goods