1, good fire resistance: the current common problem is that the combustion performance and fire resistance limit of the finished ventilator are not tested by the relevant national departments, and the combustion performance of some ventilation duct materials and the thickness of the tube wall do not meet the requirements.

2、造价低：通风管道与传统砖砌通风道比，能节约工程造价40%左右;

2, low cost: ventilation pipe and traditional brick through air duct ratio, can save about 40% of the project cost;

3、轻质高强：与传统砖砌通风道比，菱镁通风道自重轻、强度高，能大幅度降低建筑物的承受荷载;

3, light and high strength: compared with the traditional brick ventilation channel, magnesite ventilation Road has light weight and high strength, and can greatly reduce the bearing load of buildings.

4、设计灵活：通风管道可根据预留洞的大小，随时调整管道的规格尺寸;

4, flexible design: ventilation pipes can adjust the size of pipes at any time according to the size of reserved holes.

5、设计独特：通风管道的开口上安装了烟气止回阀和防火隔离门，可以有效防止串味和串火;

5, the design is unique: the vent pipe of the ventilation pipe is equipped with a flue gas check valve and a fire isolation door, which can effectively prevent the smell and fire.

6、施工简单：增加了室内空间，密闭性好、不返烟、不返臭，能大幅度改善室内环境。

6, simple construction: increased indoor space, good airtight, no smoke, no smell, can greatly improve the indoor environment.