Tìm kiếm

PCCC, Phòng cháy chữa cháy

Kết quả tìm kiếm trên "Video": 4
High Rise Escape Systems uses a Controlled Descent Device (CDD) that adjusts to the user’s weight and lets them descent at a rate of approximately 1 to 1.5 metres per second.
You may have a mechanical ground, but do you have an electrical ground?
IAFF produced about IAFF 1710
FM-200 Fire Suppression Systems