Supplies and suppliers are a very difficult and important part of any project to get married up.
Getting the suppliers sorted out for any project is a pain in the xxx. Any engineer will tell you, current component parts are being superseded and discontinued all the time.
Even when the design of a project starts with current and newly available component parts. Some components still may well be superseded by the time the project reaches implementation. Especially with projects targeted for production, this involves proof of concept, prototyping, pre-production runs and testing.
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