The Brymen DMMs aren't stamped because they rebrand for various companies. There are stickers in various locations that can be customized for the seller, whether it's Welectron, EEVblog or Greenlee, for example. In the case of Welectron, the Brymen logos are still present, but Welectron has their own custom label on the back for the serial number and for some models the sticker on the front also has Welectron's name.