I have not seen any of those type in use here in the US, But i noticed about a month ago looking at some electrical items a friend had for sale, He had a case of 100 cords about 6 foot long with the same end on them.
Have no idea were they were being shipped and what the application would be here in the US unless a US manufacture was installing them on a product that was being shipped to Asia.
PowerTig 200DX
Supercut 50P
PowerTig Micro 185 SOLD GREAT MACHINE
Millermatic 200
Miller Thunderbolt
Jet 1340 Lathe
Jet 20" Drill Press
Jet 12" Wet Band Saw
Kalamazoo H7 Bandsaw
Forward 12,000 lb 4 Post Lift