The VD series chain hoist is a manual lifting tool specially designed for heavy-duty scenarios and harsh working conditions, with the core advantages of "strong load-bearing, low energy consumption, and long-lasting durability", suitable for precise operation needs in non power environments. The body adopts a composite structure of high-strength aluminum alloy and high-quality carbon steel, with a lightweight design that is easy to carry. It also has excellent corrosion and impact resistance, and can operate stably in humid and dusty outdoor environments. The alloy steel gear set equipped with precision grinding technology inside, coupled with double row ball bearings, has higher transmission efficiency and reduces hand pulling force by more than 15% compared to traditional models. It is less prone to fatigue during long-term operation.