Any twin blade plug made in China will probably have pins of the same size. The reason is North America is the only one using the twin blade polarized plugs, al

Any twin blade plug made in China will probably have pins of the same size. The reason is North America is the only one using the twin blade polarized plugs, all bets are off in the rest of the world. Also, the pins may be the same size so you won't run into problems when you travel internationally. Sparking will happen regardless of the way you insert the plug into the socket. This is probably due to a lack of inrush current limiting in the notebook power supply. When you plug it in, the discharged capacitors appear as a short across the AC line momentarily as they charge up. This is what causes the sparking.