RFH 355nm UV laser marks food packaging bag film   Mr. Li, from Shandong, has ordered 5 sets of 3W UV lasers for packaging bag marking at the Guangzhou Packaging Exhibition. "±0.02mm high precision", "small size", "high stability", and "high cost performance" all are the core advantages of RFH S9 UV laser, and they are also the reasons why Mr. Li is in favor of RFH UV laser.