Proof of work
It is my unit ( Comrade) ( ID number: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ) in _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ department, engaged in _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ work has been _ _ _ _ _ _ _ _ _ _ _ years, hereby certify that.
Name of Institution: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Day period: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
( seal)
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