Lamp shell surface cover ring for standard size, suitable for all kinds of lamps installation;

灯壳面盖环为标准尺寸，适合各种灯具的安装装配；

youdao

Lamp shell surface cover ring for standard size, suitable for all kinds of lamps installation;

灯壳面盖环为标准尺寸，适合各种灯具的安装装配；

youdao