ISE 2018: Absen Explains Its COBALT Chip-on-Board (COB) LED Technology2 February 12, 2018 | Home / February 12, 2018 rave-video / ISE 2018: Absen Explains Its COBALT Chip-on-Board (COB) LED Technology2 Look in: ISE ISE 2018: Absen Explains Its COBALT Chip-on-Board (COB) LED Technology2