Kitchen, bathroom exhaust passage Introduction residential kitchen and bathroom exhaust tract, for excluding the kitchen cooking activities flue pipe or toilet aggregate products. Also known as the exhaust tract, ventilation ducts, exhaust residential road. Residential flue residential kitchen, bathroom shared a major component of the exhaust piping system. Sulphoaluminate cement is alkali-resistant glass fiber mesh folder or folders ordinary portland cement reinforced steel mesh and other materials made of prefabricated. Product performance of residential kitchen and bathroom exhaust tract using production lines, smooth surface, low friction coefficient, low drag, and with fire, water, environmental protection, non-toxic, anti-aging, corrosion-resistant, odorless, shock absorption silencer, no distortion, no crack, good volume stability, simple construction operation and long service life advantages. Performance Item Index Fineness (1mm square empty sieve residue) ≤12% bond strength (MPa) ≥0.8 compressive strength (MPa) ≥6.0 flexural strength (MPa) ≥3.0 water retention (%) ≥93 initial setting Time (min) ≥40 Final setting time (min) ≤80 scope and application conditions can meet people on insulation, sound insulation, fireproof, waterproof, flexible interior divider and decorative functional requirements. Residential kitchen and bathroom exhaust channel has light weight, high strength, no deformation, good fire resistance, resistance to impact performance of flexible, easy to install, good noise performance, easy to damage and so on. Widely used in residential buildings and public buildings kitchen and bathroom exhaust smoke. Solve the flue gas odor phenomenon string.