... 3.Ultrasonic Auto-focus 4.Rotary attachment advertising engraving machine Laser Engraving Machine JG-7040SG Product Features: 1. Honeycomb ... Card Board, Pressboard, Paperboard, Chipboard, etc. Applicable Industries: Advertising & Crafts, Plaques, Trophies, Awards, Bangles, Badges, Tags, ... 245 Gross Weight (KG): 295 Versatile Laser Engraving Machine:Working size and laser power can be customized ...