1. Marketing program to refresh the stock
2. Too optimistic forecasting
3. Problem with product itself
4. Customer’s own fault
5. End of life of the product
6. Not in the article: Product boycott, Natural disaster
Reuse is the easiest method because the product will be through process requires less preparation. The product can use as usual after inspection and cleaning
Recycling/Reprocessing is the complex method that the process requires the old products are through multiple processes, or new processes to make new products.
Both of methods have the same purpose is making the products cannot use that return to work again to reduce the amount of waste. Recycling has the multi-step process and must be developed all time that pays the cost more than reuse. we can do this by ourselves without going through a complex process.