... 2. We use the best material of aluminum and the metal joint 3. Lightweight,self-contained in aluminum case with black power ... :Matte white,glass bead,grey glass bead,glass fibre,soft metal.etc 9. Use the air-press sustain framwork 10. Built ... .8,Visual angle>30,fire resistance accord with international standardSoft metal:brightness>3.0,Visual angle>30,fire resistance accord with ...