What are the advantages of centralized contracting?

There are many advantages of centralizes contracting, some of them are:

1. Uniformity in Bid documents, specifications and procedures.

2. Easy access for bidders. 

3. Time saving.

4. Better control on procurement process.

5. Better analysis of rates/ rate comparison. 

1. To control orders from irrigularity
2. To Control cost
3. To understand the situation in common with proper flow
4. to controle individual feelings and interst
5. It will be easy for the Parties to identifiy things to whom it will concern
6. committe work is usually lengthy etc