A laser marking machine is an advanced, non-contact industrial tool that utilizes a focused beam of concentrated light—generated by laser sources like Fiber, \text{CO}_2, or UV—to create permanent, high-contrast marks on various materials. The core function is to alter the material's surface properties or appearance through processes such as engraving (removing material), etching (creating a shallow, high-contrast mark), or annealing (changing color through localized heating without material removal). These machines are essential across industries like automotive, aerospace, electronics, and medical devices for traceability and identification, producing durable markings that withstand abrasion, chemicals, and heat, including alphanumeric serial numbers, logos, and machine-readable 2D codes (like QR and Data Matrix codes). Controlled precisely by software and often incorporating a high-speed galvanometer system, the laser marking machine offers unmatched accuracy, speed, and versatility over traditional methods, ensuring the mark remains intact for the product's entire lifecycle.