200w  Incandescent bulb   E27

1).Type:A19/A55/A60/A70/A75/PS100/PS110/T60 incandescent bulb
2).Voltage:110v-130v/220v-240v incandescent light bulb
3).Wattage:25w/40W/60W/75W/100W/150W/200W/300W/500W incandescent bulbs 
4).Model number: clear/frosted/soft white/color light bulb
5).Base:Iron/alum./copper for choosing in E14/E27/E40/B22 incandescent light bulb
6).Diameter:35mm/45mm/55mm/60mm/70mm/75mm/100mm/110mm
7).Lifetime:1000hours
8).CE/ROHS/CCC/TUV/SONCAP/SASO/ROHS Approved

9).Material of base:Aluminum/iron/copper.
10).Shape:A55/A60/A70/A75/G40/G45/C35/R80/R63/R50

 Package:1pc/color box ,10pcs/shrink,100pcs/carton,color box also can be customization.
 
                            INCANDESCENT LIGHT-EMITTING PRINCIPLE

  Common incandescent lamp is mainly composed of filament, wires, lamp holder and glass shell, column, etc. In simple terms, incandescent lamp is through the power of the filament after heated to incandescence state, with visible light from a thermal radiation light source. The main point is the filament incandescent light bulb and filament is commonly tungsten wire, tungsten wire is if you meet the oxygen oxidizing reaction, then it will be when the tungsten filament temperature as high as 2000 degrees after the power supply will be the tungsten filament burn out, and reaction generated a yellowish-white tungsten trioxide, just attached to the glass shells, on the wall so we common incandescent light bulbs will be black and it is for this reason.

        Qingdao Rocky Industry Co.,Ltd. is a professional manufacturer and exporter in energy saving lamps,led lamps,incandescent bulb,fluorescent tubes and other lighting solutions since 2000.

     Our manufacturing base totally oppupies the area of 23,00M2,which is equipped with advanced manufacturing facilities and test&research instruments.We carry out the quality-control system of ISO9001 and environment management system of ISO14001.

     Now we have been certified by most international standards such as CE (EMC&LVD),ROHS,GS,SASO,and TUVetc.We mainly export to North America,European Community,East Europe,Middle East,North Africa,South America and South Asia BY OEM or our own registered brands.

          We are seeking long and mutual benefit cooperation,adhering to the coomercial principle:CREDIT,QUALITY AND SERVICE.

                     Welcome your kind inquiry!!!