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Are they any good for our DIY purposes ? https://www.aliexpress.com/af/reflow.html?site=glo&g=y&origin=n&spm=2114.search0604.0.0.64df29d0cCZ6z2&filterCat=200215814%2C144003&jump=afs&groupsort=1&SortType=total_tranpro_desc&SearchText=reflow&initiative_id=SB_20181214111546

Hello guys, Has anybody tried these multi spectrum COB`s? Any feedback/thoughts? Thank you :) https://www.aliexpress.com/item/High-Power-LED-chip-45mil-Blue-Green-Yellow-Red-Warm-Natural-Pure-Cool-White-Watt-5W/32671581751.html?spm=2114.13010308.0.0.aGGMbm...