Fire sleeve applies to no more than 100m tall building. In the UPVC drainage pipe through the floor, set fire wall casing. It can stop the fire spread along the plastic pipe effectively. GWH-A Fire Sleeve is incombustible material and it has fireproof, heat insulation, non-toxic, anti-Shock performance. Also it has durable quality and can be bought less. After testing, its overall performance is the first of its kind. The fire sleeve has been widely used in high-rise buildings, staff housing, public buildings and some industrial buildings by The Ministry of Construction.