United Power Research Technology Corp.--Handheld photometers for LED lamps
United Power Research Technology Corporation (UPRtek), a subsidiary founded by the Phison Group in 2006, promoted the MF250N and the MK350N Plus series photometers for measuring LED lighting at the 2015 Autumn edition of Hong Kong International Lighting Fair from October 27 through 30. With a rep... 詳全文