The definition of produced (product) is generated.
Produced is synonymous with impermanent phenomenon and compounded phenomenon.
The emphasis here is on the past tense. A compounded phenomenon only exists once it has been generated, when the process of generation and production lies in the past.
Only then can one say it has been produced, and at this time it is already in the process of disintegration, producing the next moment. In such a way generated phenomena are never at rest.
All impermanent phenomena are produced, like a mirage. Similarly, these aggregates are produced too.