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Question:

What is the difference between E27 and E40

What is the difference between E27 and E40

Answer:

Where E is to mark Edison and take the mark of his first letter
Common specifications are E27 E40
Lamp head sub-bayonet (incandescent type) and screw type
True thread type, 27 and 40 can be seen as the diameter of the lamp is about 27mm or 40mm.

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