... Bulb specification:Base material: iron /aluminum/copperDiameter:55mm/60mm/70mm/75mmCertificate:ISO9001-2001/SONCAP/SASO Incandescent BulbAppications:home lighting ,office lighting ,display lighting,lawn ... experience of manufacturing incandescent bulbs and energy saving lamps.Like clear bulb,frosted bulb,round bulb,candle bulb and u,half-sprial,full-sprial,T5/T9,global ...