meaning for 密封 mìfēng:

  • - to seal up

zhǔyào主要
gōngyì工艺
dēngxīn灯芯
fēngzhuāng封装
zhuānyòng专用
diànyuán电源
mìfēng密封

The main technology: lampwick packing, special power source and sealing.