... the third bracket light......ect3. Construction And Indoor Aapplication: Building layer label of elivator, mark of fleeing , safety mark in night, ... Sspace Aapplication: Back light of military map, apparatus meter back light, mark of airport for planes landing , recognized mark at night, field ... the night market the mark and poster that the seller bring with them. EL light,EL product,EL Wrist-watch ...