• 东莞市博旺光电有限公司
  • 地址:广东省东莞市常平镇
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In brief, it is the difference by the length, but there usage also have a little difference:                             31mm LED bulbs are commonly used for Japanese cars map or dome lights, 37mm LED bulbs are commonly used for European cars dome lights, or license plate lights and 42mm LED bulbs are commonly used for American cars map or dome lights.


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