# Product substitution

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Product substitution depends on use of the product. The relation of Product Groups to each other in Product substitution is very different from relations in Service cycle.

### Examples of product substitution:

- A vegetarian substitution for ground beef could be ground soy.
- Electric heating is a substitution for oil heating
- Soy milk is a substritution for milk
- Rechargeable batteries are a substitution for disposable ones