uv laser engraving PCB QR code, cutting line width is small and carbon-free 15W UV laser marking PCB QR code, has the characteristics of high definition,and no burr. PCB laser marking machine’s customer has purchased 15W UV laser   The UV laser developed and produced by RFH can clearly mark the required QR code and text on the PCB, without affecting the use of the PCB.   Ultraviolet laser is a cold light source with small light spot, low thermal influence, small cutting line width, no carbonization, and no burrs. It is a wise choice for PCB to engrave QR code.   The customer from Wuhan has just placed an order to purchase RFH15W high-power UV laser for carving PCB QR code.