Designated area of tax bureau. The seal of Shandong Heze Shan County Taxation Bureau needs to be engraved in the place designated by the Taxation Bureau. The special tax seal, that is, the special invoice seal, refers to the seal engraved by the invoice unit and individual according to the provisions of the tax authorities. The seal impression includes the company name, the words of the special invoice seal, the tax registration number, and the seal stamped when purchasing or issuing the invoice. The font of the special invoice seal requires simplified imitation of Song Dynasty.