... research& technology center... UL approval axial flow fan motor for air cooler/water chiller Verified Information This information is Verified by ... /23 --- 2017/05/23 CCC CQC 2012010401544196 Single Phase Axial Fan with External Rotor Motor & YWF2E200, YWF4E250, YWF2E250, YWF2E300, ... 2009/02/10 --- 2049/12/31 SLG SLG H12M20812-7172 Fan Motor & YWF800, YWF710, YWF630, YWF500, YWF450, YWF400, YWF350, ...