RFH 355nm UV laser marking food packaging bags Food packaging bag date marking, fast speed with RFH 355nm ultraviolet laser Nanosecond UV laser marking food packaging bags will not fall off for a long time   Arowana rice food packaging bags are marked on the date, and the production date is marked with an RFH 355nm ultraviolet laser. It is clear, eye-catching, wear-resistant, durable and does not fall off. It will destroy the packaging when it is erased, and it has strong anti-counterfeiting.