陶瓷灯座，型号：P777，E27，4A/250V 
适合做烤箱灯的灯座，使用温度为300°C

Porcelain Lampholder

Code:P777
Base:Porcelain
Thread: E 27 
Temperature: 300°C ( for the use of oven )
CApacity: 4A/250V