Hey looking at some LED's on Bsled and Aliexpress, and cidly.. Well ive noticed that the Lamp Luminous Flux(lm) has a huge difference on say 600w models 1 will be 9500 and the other 25000(example).. Does it make a difference!! My other ??? is about the OEM and ECM or something like that.. What do these mean?? Sorry these LED's all have something alittle different about them not like the HPS.. Really like Bsled Lights..
