1) Multi-welding spot guarantees the solidity and endurance
2) Bolt structure makes it easy to get goods out when several baskets pile up 3) Bended mental handle, easy to hold
4) Special feet structure ensures the stabilization when loaded down
5) Metal assistant structure guarantees the intensity of the piled baskets
6) Chain assistant structure helps strengthen the intensity of the baskets' chains
7) Screw type chain save space when folded
8) Mark: non-standard specification is available.