Choosing a suitable product for a Supply Chain Strategy Assignment?

Hi! I have this essay to do for a SCM class. The questions is:

1. Different products require different supply chain strategies. (I have to choose a bunch of products basically and differentiate their Supply Chain Strategies).

Now I have chosen the following products/industry:

- Clothing Industry
- Automobile Industry
- Computers

I need to pick one more good product/industry (one for which the supply chain strategy can be available on the net in details)
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green procurement