The closing and opening ridge ventilator is a kind of roof ventilation equipment commonly used in the cold areas, and it is mostly used in light steel structure industrial plants. The reason why the closing and opening ridge ventilator is more popular in northern China is mainly due to the influence of the seasonal gas building. The installation of the closing and opening smoke vent rooflight means that an opening and closing valve plate will be installed to control the ventilation of the factory workshop. Controllable adjustment, the motive in the cold in the north can close the valve plate, and form an insulation system in the indoor workshop of the industrial plant. As the name suggests, the closing and opening smoke vents are roof air tower installed on the ridge of the light steel structure industrial plant. It mainly uses the scientific ventilation principle of hot air rise to ventilate the interior of the plant. The closing and opening steel roof ridge vent is different from the open air building in that it is equipped with an opening and closing valve plate. This valve plate can use daylighting panels or not. If the factory has requirements for daylighting, it is recommended to install Mcwell's FRP daylighting panels to achieve effective daylighting. On the other hand, the valve plate of the opening and closing gas tower can adopt electric control in the control mode, and it can also realize linkage control with the fire protection system. The fire-fighting linkage control of the opening and closing gas tower is that in an emergency, the valve plate will be automatically opened to remove the dense smoke inside the plant and increase the chance of escape in the disaster situation. The ridge-type opening and closing air building is different from the open air building in that it is equipped with an opening and closing valve plate. This valve plate can use daylighting panels or not. If the factory has requirements for daylighting, it is recommended to install McWay's FRP daylighting panels to achieve effective daylighting. On the other hand, the valve plate of the opening and closing gas tower can adopt electric control in the control mode, and it can also realize linkage control with the fire protection system. The fire-fighting linkage control of the opening and closing gas tower is that in an emergency, the valve plate will be automatically opened to remove the dense smoke inside the plant and increase the chance of escape in the disaster situation.