请问UL2749主要是关于那=一=方面的规范与标准(
请问UL2749主要是关于那一方面的规范与标准???
UL2749 SEASONAL USE LED DRIVERS AND NON-INTEGRAL LED LIGHTING STRINGS June 17, 2011
UL2749 SEASONAL USE LED DRIVERS AND NON-INTEGRAL LED LIGHTING STRINGS June 17, 2011