1ã€Determine the quantity
of fresh air according to the indoor staff
2ã€Determine the amount
of exhaust pollution according to the amount of interior
subregion
3ã€Exhaust fan installed
in the ceiling away from the seating area or on the exterior
wall
4ã€Piping in the ceiling
in the sub-region
5ã€Outlet evenly arranged
on the ceiling of the main area
6ã€Self-balanced air
vents in the ceiling general arrangement subregion
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  Note: The main area means more staff activities, the
need for new wind region; sub-regional air pollution refers to the
area to produce.
  The new wind into the area from the air cleaner,
discharged from the dirty place, to bring you healthy fresh air to
ensure indoor air quality, you create a "breath of houses."
