Have a nice day!I am Cauter Yan from Aolan Industrial Co., Ltd, we are a leading manufacturer in evaporative air cooler for both home/office and industrial use too (from 1000M3/H upto 100000M3/H) we had gained more than 50patents of national invention, utility models and industrial design, our product had passCE, SASO, BV etc, and successfully exported more than 70 countries and regions, including Europe, America, Australia, Japan, Korea, Middle East, Brazil, Southeast Asia, and Africa etc. With years' development, Aolan had grown into a company who occupies the wide international market share, u can view details with link: http://www.aolan-china.com for more details. Hope we have a cooperate opportunity in future! Waiting for your early reply.