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- [일기] Long time no See I used the programs, GX(group exercise) and Chinese language class, offered by company for my welfare This year, Spring flowers arrive too early. I don't know the reaso.......
- FIRE DAMPER(FL/EL Type) FIRE DAMPER(FL/EL Type)FIRE DAMPER is operated by heat when fire breaking. Normally Class A 3-hour rated(UL Listed) is widely adopted.