Hey all,
I am doing a turtle diagram as a new QC supervisor. Take a look, and feel free to tear me to shreds(though, I'll probably refuse to change the format). It's in progress so I will update as I go.
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Your diagram should reflect what actually happens. As such your company seems not to be satisfying any customer needs (unless these needs happen to be represented by the contract).
I see no design of your manufacturing service nor any evidence of customers paying for the delivery of this service. Your organization may of course be part of a larger organization that runs the marketing, selling and billing processes.
This highlights the importance of providing your reviewers with a scope statement that describes the extent of your system.
Personally, I would not bother with a turtle but would use a deployment flowchart instead to depict the core process comprising the interacting processes from customer needs to cash in the bank.