Laminar flow operating room is a "positive" environment, the air pressure according to the different regions (such as the operating room, sterile room ready, brush between the hands, clean the surrounding area, etc.) cleanliness of the different requirements and different. Different operating room purification level of its air cleanliness standards are different, such as the US Federal Standard 100 laminar flow operating room standard cubic feet per number of dust particles in the air in the operating room cleanup contractors ≥0.5μm, ≤100 pieces or per liter of air In ≤3.5 stars. 1000 cubic feet per ≥0.5μm number of dust particles in the air, ≤1000 particles per liter of air or ≤35 stars. And so on. Natural ventilation is the use of the hospital building and outside the density difference between the hot air or wind-induced pressure caused by the operating room purification plant to promote air flow and ventilation conduct. World Health Organization published in 2009, "medical infection control natural ventilation 'Guide, describes the relationship between natural ventilation and hospital infection control, describes the layout of the hospital premises and adjacent areas clinics architectural design operating room purification materials, to provide control Infection effective natural ventilation. Natural ventilation requires special engineering design and facility configuration corresponding openings including windows, doors, solar chimneys, wind towers, thin air circulation device, rather than simply in the form of windows, door ventilation; natural ventilation is usually subject to climatic conditions, architectural design and human factors. Operating room purification materials _ _ Liaocheng, Shandong Ecota purification purification provided by operating room decontamination Ltd. Shandong Yick Tak. Shandong Ecota decontamination Ltd. (www.shandongyide.cn) quality services and products, and are subject to approval and confidence in the new and old customers and the industry. Our company is a certified member of the whole network Commercial Union, Commercial Union customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!