All retail dealers in soft drinks purchasing or receiving syrup from without the State, whether it has been ordered through a wholesaler or jobber within the State, by drop shipment or otherwise and all persons mixing, making, manufacturing, or compounding the syrup shall within twenty days after the end of the month during which the syrup was purchased, received, mixed, made, manufactured, or compounded, make a report thereof to the department, in the form the department prescribes, and furnish the invoices and other information as the department may require. Failure to make the report and furnish the invoices and information as required constitutes a violation of the provisions of this section and is subject to a penalty of not less than twenty dollars nor more than one hundred dollars, to be assessed and collected by the department as other taxes are collected. Duplicate reports and information required by this section must be retained for inspection purposes for three years from the time the report reflecting the sales is due.