Asian style shopping trolley costs more than European style trolley at the same level of volume. So that we should learn how to choose or design this kind of shopping trolley while the loading capacity is still guaranteed.
Using the steel tube at the buttom of trolley as frame to replace of thicker wire. Loading capacity is still guaranteed but cost gets lower.
2. Using the swivel caster with simple design while loading capacity is still guaranteed.
3. Choosing the zinc plating only to save the cost for the customer who does not use them in the area with higher moisture.