... Long lifetime, low maintenance cost it is our 2012 new design,Φ600mm,good choice for HID light source ... °CWith lower purchase costs and maintenance costsHigh effective energy savingLong lifetime, reliable performance, low maintenance costAPPLICATIONS: ... energy saving2. high strength,succinct shape,aesthetic appearance3. Long lifetime, low maintenance cost4. OEM welcome 2012 new design energy saving ...