Vendor Management with Service Industry

Hello!!

I was wondering if you guys could tell me what SAP material types do your companies use for materials/services like warranties, software install, insert (product information/usage instructions/promotion printed, folded and inserted into the package with the product). I'm assuming that any labor costs, travel, etc. related to repair are DIEN. Do you use any other SAP material types for repairs?

I'm trying to figure out what would be the most suitable material types for above items.

Also How's the VEndor management comes in into the Service industry like IT Services.

Thanks in Advance!!!

Rajesh.M