Hard pen seals are generally between 0.5 cm and 1 cm, and the seals cannot be too big or too small to match the works. Hard pen seals are mostly concave carvings, and hard pen seals are mostly long and irregular. Stamps are used as stationery printed on documents to indicate identity or signature. Generally, seals should be dyed with pigments before printing. Those that are not stained with pigment and will appear concave and convex after being printed on a flat surface are called steel seals, and some are wax prints printed on wax or wax or envelopes.
For more information about the general dimensions of hard-pen seals, please visit:/ask/639b3216101159.html? Zd view more content