Laser engraving, also known as laser engraving, refers to irradiating a part with high-energy laser to change the color or chemical properties of the irradiated part, thus leaving a permanent impression.

With the popularization of laser marking equipment and the reduction of cost, this marking method has been widely used in automobile industry, electronics, electrical appliance manufacturing, PVC pipe industry and animal husbandry.

Applications include printing bar codes, two-dimensional codes: production numbers, batches, fuselage numbers, key switches, even company trademarks, corporate logos and so on.