1) G4/G6.35/G9/GU10/JDR 2) Strengthened quartz glass 3) UV-Stop 4) CE and RoHS certified We can offer a large range of halogen lamps, including g4, g6.35, g9, j78, j118, etc, made of quartz glass, our bulbs can reach energy rating c, which are necessary for European markets, welcome to visit our website and to learn more. jc g4 12v 20w halogen lamps