Many Large Organisations and Government Departments have set minimum entry criteria for quotations and tenders for products and services; these are usually in the form of recognised quality and/or environmental standards.
If the tender request states that ISO9001 and ISO14001 are entry requirements and you don't have these, your quotation or tender, however well prepared, will not get beyond the starting gate.
These organisations simply do not have the time to vet each potential supplier for quality or environmental status. It is easier to rely on one of the Certification Bodies to do the work for them. If the supplier can show that it has passed, and continues to pass, the International Requirements for quality and environmental performance it will be considered for inclusion of that organisation’s preferred suppliers list.
ISO9001 & ISO14001 open doors