Channel Letter YAG Laser Welding Machine (300W or 500W) is a specialized laser welding system designed for welding metal materials commonly used in the fabrication of channel letters, such as stainless steel, galvanized sheet, iron. These machines are typically used in the signage industry to create strong, seamless, and aesthetically pleasing welds for channel letters, which are often seen in storefront signs, illuminated letters, and advertisements.