Unless I've read your comment wrong, the only PSU connectors with 8 pins are the 8 pin ATX connectors, and the 6(+2pin) GPU connectors.
The 8 pin ATX connector should split in two to become two 4 pin ATX connectors, necessary for motherboards using the 4 pin design.
The 6(+2) pin GPU connectors are designed to either be used as a full 8 pin power connector, or split in two, to insert into 6 pin power connectors on GPUs.
Molex connectors are 4 pin, as far as I am aware there is no such thing as a 8 pin molex connector.
As for country origin - The only difference is the plug on the end of the lead used to connect the PSU to the wall socket. The majority of PSU's built today (of at least enthusiast quality) automatically detect and then adjust to the mains power supplied, between 110V and 250V.