ledpan 发表于 2018-12-11 22:36:58

ownlight Recessed cutoff d200mm 1700lm UGR<19不是低端筒灯

Q: Downlight Recessed cutoff d200mm 1700lm UGR<19请问有厂家做这种灯吗？
A:UGR要小于19，那就不是低端筒灯了

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