The "CO2 MR -20W Automatic Fiber Laser Metal Marking Machine" is a machine that uses a 20W fiber laser to automatically mark metals and some non-metals. The "CO2" in the name is likely a misnomer, as the "20W" power level and the mention of a "fiber laser source" in the same description strongly suggest it's a fiber laser system. This type of machine is designed for high-speed, high-precision, and permanent marking of logos, serial numbers, and barcodes, typically operating on automated production lines