Power Cord, Plug Insert, Crimping Machine manufacturer / supplier in China, offering Crimping Machine (YH-005C), UK Plug Bridge Ma015-1, Turkey Cable Plug Insert (MA062-2*4M) and so on.
It is the last photo.
You have seen all photos.
How to crimp the plug inserts with hollow pins,see the drawing details.
Just crimp on the flat part at the end of hollow pins.