Laser marking, as a permanent marking method, has been widely used in computer, electronics, communication, food and packaging, nameplates, billboards and other industries. Laser can be used for permanent marking on paper, metal, ceramics, plastics and other materials, which can be divided into four ways: static marking, on-the-fly marking, 3D curved surface marking and large format dynamic focusing marking. Engraving  is mainly used in relief, mold processing and other industries. PSI provides  2-Axis, 3-Axis scanning head and software control system for marking/engraving applications, and has obvious advantages in high-precision marking, 3D marking, on-the-fly marking and mold engraving, which require high precision and high speed.