My company wants to track (measure) suppliers (raw material) quality.

In each production process there are different suppliers involved and in the production process some raw materials will not pass the quality measure, so we want to identify who is better supplier according to their product quality in production.

I have come up with the following idea. For each production we record the products involved, there quality status and there supplier, and finally for each production make summery (analysis) of the production process . . .

By doing this we can identify who is better supplier by looking at the result of different production analysis.

My question is how can I do this in Odoo(openERP)? I have looked at the MRP module and there is no such thing . . . would you inform me some other (better) module to implement my requirement?  

What is your general suggestion to implement this this requirement.

How can I modify the Reporting Module? It have sales, purchase, HR analysis how can I add Manufacturing analysis there?

I am currently working on odoo v8.