Schools fresh air system, Hebei school air system, the benefits of campus ventilation equipment installation of new wind system are the following: (1) no windows can also enjoy the fresh air of nature; (2) can be run automatically according to indoor air quality, conduct air volume control, without manual operation; (3) to ensure indoor air quality to meet health standards; (4) to avoid "Air conditioning disease"; effective complement O2 required by the body, enhance students' learning ability (5) to avoid air conditioning is turned on, because the window energy loss caused by ventilation; (6) adjust the indoor humidity, saving heating costs; (7) the effective exclusion of the indoor variety of bacteria, viruses; (8) professional design and installation, ultra-quiet, does not affect the school.