The hook of Hangzhou guanhang brand chain block is of high quality. Firstly, from the appearance, it has fine workmanship, smooth surface and no acute angle, burr and crack; Secondly, in terms of manufacturing materials, the hook body is forged with high-strength and high-quality alloy steel, and then processed by multi-purpose furnace assembly line, which has sufficient strength, good toughness and strong impact resistance, and can deal with the impact load of heavy objects; Finally, the hook can rotate flexibly around the vertical axis, which is convenient for hanging and unloading heavy objects quickly, and improves the efficiency of production operation.