I want to produce a garments (finished goods)

To manufacture it I need two products (raw material)  which are 

1. Fabric-A

2. Fabric-B

Fabric-A I need to purchase

Fabric-B I need to produce

In sageX3, how I will define those products (Fabric-A & Fabric-B) where it will be mention about the product is "produce/manufacture" or "purchase" ?

Please help here