... Weight : 373g ,9pcs/ctn ,CTN SIZE : 450*450*350mm1.What is COB ? Chip-on-Board, or COB, refers to the semiconductor ... performance as a result of the shorter interconnection paths.2. What is COB Advantage ?1) Reduced space requirements;2) Reduced cost ... dissipation.6. Driver : External driver, waterproof, IP65.7. Dimmable is availble. Application:Home /office lighting ,display case lighting, under ...