Pin spacing:17-18:18-19.
South Korea's second plug: exposed copper bar 19+0.07/-0, copper bar Ф 4.0+/-0.06 pin spacing: 19 +/-0.2 all copper.
Exposed copper bar 19+0.07/-0, semi-insulating length10+1-0; The copper bar is Ф 4.0+/-0.06 and the insulation is Ф 3.8+/-0.05.
Pin spacing: 19+/-0.2 Semi-insulation
Summary:
European frame: its structure is 4.0X4 high semi-insulation, 3.8X6 high insulation and 4X9 high copper bar; Two copper bars are inclined to the middle.
Korean frame: Its structure is Ф 4.0 x19 high copper bar, with two copper bars horizontally upward. All copper
Its structure is Ф 3.8x10 high semi-insulation, followed by 4.0X9 high copper bar; Two copper bars are horizontally upward. semi-insulated
I'd better show you the picture, because this description is not clear! I don't know if you understand.