Household air system to be encouraged to promote many people are now talking about the air quality, and to improve air quality air system has become a hot topic of people, why home to install a new air system it? The main reason is that modern architecture is getting better airtight doors Weishan indoor ventilation equipment, indoor air circulation is difficult with the outside world, a long time can cause a serious decline in the quality of indoor air. First, indoor harmful gas can not be discharged. These harmful gases include: the decoration materials such as formaldehyde and benzene, secondhand smoke, infectious viruses and bacteria, which are harmful to human health, in severe cases can cause lung cancer and leukemia. With humans and other consumption, indoor carbon dioxide concentration increases, the oxygen content is relatively low, people long to live in such a hypoxic environment, can cause headaches, nausea, human premature aging, and heart disease. Thus, indoor air quality directly affects our quality of life, while ventilation is to improve indoor air quality in the most direct and effective method of indoor ventilation equipment, has become to improve the living environment and improve the quality of life necessary means. In some European countries have put residential ventilation requirements for provision enforceable. The new air system is in this environment came into being. PM2.5 health hazards of a trigger airway obstruction or inflammation research reality, PM2.5 particles below 75% deposit single county indoor ventilation equipment in the alveoli, we can imagine, his eyes into the sand, eyes inflammation. The depths of the respiratory system, but also a sensitive environment, fine particulate matter as a foreign body in the respiratory system of long-term stay in Heze indoor ventilation equipment, also makes the respiratory system irritation. 2, pathogenic microorganisms, chemical pollutants, soot and other "ride" into the body in addition to their carcinogenic to do bad things, PM2.5 but also as a vehicle can freely enter the respiratory system of the car, other healing substances such as bacteria, viruses, " ride "into the depths of the respiratory system, causing infection. Epidemiological survey found that urban air particulate matter PAHs residents lung cancer incidence and mortality. Process PAHs into the body, the fine particles acts as a ride, of which the most PAHs adsorbed on the surface of particles, in particular 5 mm or less in diameter particles, larger particles on PAHs very little. In other words, the more air PM2.5, the more chance we have of PAHs exposure to carcinogens. 3, affect fetal development caused by defects in some of this year's report shows that human reproductive capacity is decreased, environmental pollution is considered to be the culprit. A survey from northern Bohemia, on exposure to high concentrations of PM2.5 have been studied in pregnant women, found that high concentrations of fine particulate pollutants may affect fetal development. More study found that the concentration of atmospheric particulate matter and preterm children, increased neonatal mortality, low birth weight, intrauterine growth retardation, and congenital dysfunction relevant. 4, PM2.5 particulate matter can be exchanged into the blood vessels collecting an experiment in 2009 in Beijing urban atmospheric PM2.5, human alveolar epithelial cell line as a model study conducted toxicological effects. In this experiment, 25, 50] 200 micrograms / milliliter comparing different exposure conditions found with increasing exposure concentration, PM2.5 can cause inflammatory damage these cells. Indoor ventilation equipment, Heze indoor ventilation equipment, Hirono Environmental Engineering (certified merchants) provided by the Shandong Environmental Engineering Co. Hirono. Hirono Shandong Environmental Engineering Co. (www.zdhjgc.com) to provide "fresh air system, central vacuum, central water, central air conditioning, floor and ceiling radiation and board" business, the company has "Cinderella, Panasonic, ambitious, Gree, Daikin "and other brands. Focus on the fans, ventilation equipment and other industries, have higher visibility in Jining. Welcomes inquiries, contact: Dingjing Li.