Smell; Listen for the sound of hitting the hard part of the drag chain

Beating high-quality tow chain, its sound is relatively low, feeling relatively thick and heavy; No obvious odor smell; Listen for the sound of hitting the hard part of the drag chain
Knock the inferior drag chain, the sound it makes is clearer, the feeling is empty and light; It has a strong smell and a pungent taste


Rub the surface of the plastic drag chain hard with an external force

The high-quality drag chain is more difficult to rub up, and the debris under the rub is fine, is powdered, cut the product to see the cross section of the drag chain with the help of external forces to rub the surface of the plastic drag chain
The inferior drag chain is easy to rub out the pits, the debris is granular, cut the product to see the cross section of the drag chain