https://www.heatsign.com/products/handheld-laser-engraver/
We all know that standard fiber laser marker need to be connected to a computer and are not portable enough. Today we have a 100% handheld fiber laser marking machine that is easy to carry, easy to use, and can be used to mark medium sized, as well as large items. 
The NEW HS-PFL20 Portable Laser Engraving Machine Features: 
1.All-in-one design, integrated touch screen computer, wheeled trolley case for easy move. 
2. Laser head is only 3.3kg , easy to carry. 
3. Laser etching content can be Texts, logos, numbers and 2D codes (DataMatrix, QR codes..), Barcodes, serial number etc. 
This handheld laser engraver is also can be used for permanent marking on metal parts like stainless steel tags and some plastic parts.