New Vs Old Welding Cable

At the present time, there is welding cable manufacturers who prefer the lower the quality of their products rather than having to boost production costs which will result in a higher selling price. see how they reduce the volume of copper inside the cable that causes:
1. Cable conductivity decreases
2. Cable quickly became a hot
3. Cable fast peeling
4. Safety aspect of the welder
Picture attached is a welding cable with a size 70, so please be more careful when buying a product, it could be the items that you purchased does not accordance with the way you expect.
Cheers... :)