Regions/countries may have (or want to have) unified and special requirements for their local industry with the purpose to improve quality and efficiency. Such catalogues can also be set up. As an example the Norwegian oil&gas industry is operating a common repository for the industry where many of the vendors, contractors and operators are committed to use equipment data and documents from one single source to the benefit for all participants. Read more about this initiative on EqHub. One of the benefits of this option is that vendors can meet a standard set of requirements and approved information for the whole region. The option may also be a good way of supporting local content where this is a requirement.