Printing Hardware
Use High Qualith Printers
Basic Labels
Zebra, Dymo, Brother
Good Labels
Maybe suitbsle for reatil, 300dpi to 600dpi
Very Good Labels
600dpi or better, color options
Primera LX1000 - https://amzn.to/2JpsJLa
https://www.barcodesinc.com/cats/barcode-printers/600dpi.htm
Great Labels
Epson TM-C3500
This printer is amazing, up to 720dpi printing, four color. It's suitable for both tracking labels and packaging labels.