Chengxinda was established in 2005 in China to provide kinds of refrigeration equipments, its application for all regions whether it&＃039;s for Residential, commercial or Industrial, in order to provide a cool and refresh atmosphere during the summer time and during high ***** product range are Evaporative Air Cooler for industrial & household series, cooling pad & air exhaust fan system widely used in greenhouse, livestock, poultry farm and so on .