Boss, business department (salesman+document 1), office (daily administrative chores 1, driver 1), finance (accounting cashier 1).
The rest is almost the same. If there is QC, it will charge the business department. The driver depends.
One manager is in charge of the business department, while others are directly responsible to the general manager.
It has nothing to do with small companies. At most, add the head of the department below and add a few titles.
general manager
_________|_________________
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Business Department, Finance Department Office, Storage and Transportation Department