First of all, we can identify the advantages and disadvantages of the chain block through the most intuitive color. Most of the chain block surfaces with high-quality paint baking technology are painted with bright colors and luster, and the paint surface can be touched by hand without potholes.

Secondly, observe the chain of chain block. High quality chain block is accompanied by high-quality lifting chain. The chain is also shiny, without excess welding slag, and there are no rust, cracks and rough interface, which is common on low-quality chain block.

Finally, the contents on the nameplate are incomplete, and the production date, manufacturer, rated load, lifting height, etc. are not clearly indicated. Some even have no nameplate. Of course, this inferior product does not want to disclose its own information.