... : 600*600*55MM Chinese aluminum alloy mirror reflector Application: Office, School, hospital,hotel,supermarket,tall building, ... 45mm cold-rolled steel plate,after Painted 0.5~0.55mm.Painting Powder:Automatic painting line promised high effiency and high ... quality electronic ballast with CE,ROHS,CCC certification0.99Power factor, THD<10%,EMC Passed,3 years warranty.Tube10000Hours and 30000Hours for ...