The size is 40×40mm. The size of the official seal of the self-employed household is 38 × 38mm, and the width of the round edge is1mm. Appearance: the enterprise names of the five-pointed star in the central journal and the five-pointed star in the foreign journal circulate from left to right, or the front of the name circulates from left to right. The second half is arranged horizontally from left to right, and simplified Chinese characters are used in seal characters.