Carbon dioxide density larger air, when carbon dioxide is low on the human body without harm, but it will affect people more than a certain amount (other creatures also) breath, because the increase in the blood concentration of carbonate carbon dioxide, acidity and produce acidosis. Carbon dioxide in air volume fraction of 1%, industrial CO2 felt tightness, dizziness, palpitations; feel dizzy 4% -5%. When more than 6% makes confusion, breathing gradually stopped even death. Production of carbon dioxide within a certain range, the higher the concentration of carbon dioxide, the stronger the plant photosynthesis, carbon dioxide is therefore the best gas fertilizer. American scientists in New Jersey, a carbon dioxide farm enterprises, the use of carbon dioxide for different crops in different growing a large number of experimental studies, they found that carbon dioxide in the growing season and mature crops, the effect is most significant. In both periods, if the carbon dioxide gas injection twice a week, spray 4-5 times, and vegetables may increase 90 percent, rice 70 percent increase soybean yield of 60%, sorghum may even increase 200%. Cart-type carbon dioxide fire extinguishers generally consists of two operations, the use of two of the fire burning at the push or pull together, at about 10 meters away from the combustion stop, a man quick to remove the horn and expand the spray hose after holding horn root handle, the other counter-clockwise spin fast the handwheel and open to the maximum position. Portable fire fighting methods and the same way. When using carbon dioxide fire extinguisher, in outdoor use, should be selected in the upwind direction injection. Outdoor use in tight spaces, the operator shall promptly leave after the fire, to prevent suffocation. Carbon dioxide sales | CO | Fung Ltd. Qunli Qunli by Qingdao Feng Industrial. Qunli Qingdao Fung Ltd. (www.qunlifeng.cn) strong, credible, in Qingdao, Shandong and other chemical products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the group of HSBC into the brilliant and you work for a better future!