Normal operating conditions a) applies to the ambient atmospheric pressure does not exceed 86kPa ~ 106kPa; occasions b) ambient air temperature -20 ℃ ~ + 40 ℃ of; c) medium relative humidity less than 95% (+ 25 ℃ when); d) installed in no explosion hazard DK40 main fan, transport medium must not contain explosive material. K series of mine fan blower suitable for multi-joint operation is a series-parallel multi-level multi-fan ventilation system ideal stations stations fan levels. DK40 main fan _ _ main fan provided by Zibo Zibo Blower Fan Factory Limited. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) strong, credible, Shandong Zibo fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zibo Blower and you hand into the brilliant, for a better future!