The HSZ series chain hoist is a lightweight lifting equipment that complies with the GB/T 20617 standard, with the core advantages of "small size, large load, and high safety", and is suitable for multiple industries with no power supply operation needs. The body is made of high-strength sheet metal stamping, combined with rolled edge reinforcement design, which combines impact resistance and portability, and can be flexibly operated in small spaces. Internally equipped with 20CrMnTi alloy steel gears, which have undergone carburizing heat treatment for wear resistance and durability. The two-stage spur gear transmission significantly reduces hand pulling force, and when combined with the overall bearings, achieves smooth operation.