1. 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.

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: the ventilation pipe and the traditional brick ventilation channel can save about 40% of the project cost.

3.设计灵活：通风管道加工可根据预留洞的大小，随时调整管道的规格尺寸;

3. flexible design: ventilation pipe processing can adjust the size of piping at any time according to the size of the reserved hole.

4.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;

4. quality 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.