Our company currently has 4 manufacturing facilities globally, 2 of which have implemented IATF16949 and are certified, and 2 of which are working towards certification. All facilities will have separate certifications. Can anyone speak to the advantages or disadvantages of moving to a corporate certification as opposed to our current plan to have 4 separate certifications? It seems that there could be some major cost savings in regards to the cost of certification and surveillance audits, as well as potential time savings related to management of the QMS at each location. Any input would be greatly appreciated.