Engraving is a production process that uses tools (computers, engraving machines, etc.) to carve some needed pictures and texts on seal materials. ). Due to various needs, companies, schools, and signatures should be used, such as the school's student status management chapter and the academic affairs office chapter.
Companies will use the special seal for contracts when signing contracts, and the special seal for invoices when stamping invoices, including business seal, official seal, financial seal and legal representative seal, which are the most commonly used. According to the purpose, it can be divided into public seal and private seal, corporate seal, artistic seal, personal and private seal, etc. According to the material, it can be divided into atomic seal, ink return seal, photosensitive seal, red rubber seal, natural horn seal, ivory seal, crystal seal, Huang Mu seal, roller seal, copper seal, steel seal and jade seal.