High speed PE fresh air duct equipment 1. Environmental protection. 021.02PE material (same material as food plastic wrap), environmental health and health. 2.02 has good oil resistance, acid resistance, alkali resistance and chemical resistance; 3.02 has certain cold and heat resistance; 02 has heat sealing performance and high heat sealing strength; 2. Easy to construct. 0202020202021.02 The pipeline distribution system of the ground ring fresh air pipeline is compatible with all conventional fresh air hosts and the same construction methods of air volume control valves and floor heating water dividers, and truly realizes one pipe at one outlet along the way. 2.02 is simple in design and convenient in construction. No joint in the middle, no need to worry about pipe air leakage; 3.02 no hard elbow, no local resistance of the pipe fittings; 4.02 flexible pipe, free bending, no more construction conflict with air conditioning and hydropower; 5.02 small pipe diameter, small punching, small damage to the house, and more secure. 6.02 Due to the flexibility of the bellows, it is possible to have a very small bending radius without the use of additional joints. 7.02 Smooth interior walls can get a lot of flow.