The official seal style is unified, and the official seal style of domestic companies and units is round.

The official seal font requires simplified characters. The diameter shall not be greater than 45 mm. The official seal size of state-owned enterprises is 42×42 mm, the official seal size of limited companies is 40×40 mm, and the width of round edge is 1 mm. The official seal size of limited companies is 40×40 mm, and the width of round edge is 1.2 mm. ..

The official seal of the branch, the special seal and the official seal of the subordinate departments of the company are 38x38mm in diameter and 1mm in width. The five-pointed star is printed in the center of all official seals, and the size of the five-pointed star is 12mm to 14mm. The name of the five-pointed star foreign language publishing enterprise circulates from left to right. The names of subordinate departments and branches are placed under the five-pointed star and arranged horizontally from left to right.

Foreign capital or Sino-foreign joint venture: The official seal of a Sino-foreign joint venture company and the official seal of a foreign-funded company can be engraved with steel seal or Chinese and English seal according to the requirements of the company using the official seal, or with Chinese seal separately.

Foreign official seals are generally oval, and the dimensions of foreign official seals are specified as: 45X30mm, 30mm in vertical diameter, 45mm in horizontal diameter and 1mm in round edge width. The seal can be carved in red or blue.

There is also a social group: the seals of local social groups are required to be round. The diameter is 40mm, the circle width is 1mm, and the five-pointed star pattern is published in the center. The size of the five-pointed star is 12mm to 14mm, and the five-pointed star is published in the name of social organizations, circulating from left to right.

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The official seal refers to the seal used by organs, organizations, enterprises and institutions. Because the Ministry of Public Security has not made uniform provisions on the engraving procedure, the provisions on the engraving procedure vary from place to place. According to the different types of seals, the procedures are different.