... ,applied luminous efficiency 123.7lm/w,it is twice brightness in the same industry.4) It’s just 5.71% lumens ... traditional HPS lamp.7) We have successfully completed many cases in USA,Japan,Germany,Mexico,Australia etc. Feartures : Light SourceParticular & Ultra ... Size :L 40 * W 40 * H 27 cm 2PCS /Carton South Africa 90W Epistar chip Toll Station LED Lighting project