I would guess Milwaukee gave their specs and feature list, as well as the need for a distinctive enclosure, to a contract OEM.
Because they are liable, the product will have proper fuses and 61010 approvals. Like Greenlee. What I can find...
Uni-Trend can be found under trade names:
Amprobe,
Milwaukee, Grainger, Minipa (Brazil), Voltcraft, Greenlee (USA), Digimaster, Urrea Surtek (Mexico),
SPERRY Instruments USA, Tenma,
PeakTech, Koban,
CDI Electronics (USA), MCM,
Di-LOG (UK),
Klein Tools (USA),
EXTECH Instruments,
Southwire,
UNI-TMGL Global Solutions Limited - Kowloon Hong Kong SAR, china can be found under trade names:
Commercial, Commercial Electric, DAWSON, Mastercraft, MASTECH, MAXIMUM, Multimetrix, STANLEY FATMAX, LAP, MACTOOLS, AMES, Power Probe.
CEM (Shenzhen Everbest Machinery Industry Co. Ltd) can be found under trade names:
CEM, Amazon {multimeters}, Craftsman, Kobalt, Utilitech.