There are two electrical light bulb standards. One is Europe Standard(EU) and the other is United States Standard(US).
EUROPE STANDARD (EU)

. E05-EU-25T
. E05-EU-GX53-9W
UNITED STATES STANDARD (US)

. E04-US-15PL
. E05-US-GX53-9W
. ES04-US-25B
Showing 5 items
StandardModel No.NameDescription
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StandardModel No.NameDescription
EU E05-EU-25T Incandescent T Bulb E14 220-240V 25W 
EU E05-EU-GX53-9W Compact Fluorescent Lamp GX53 220-240V 9W 
US E04-US-15PL Compact Fluorescent Lamp 2U E12 110V 15W 
US E05-US-GX53-9W Compact Fluorescent Lamp GX53 120V 9W 
US ES04-US-25B Incandescent T Bulb E12 100-120V 25W 
Showing 5 items