Westlake solar roof solutions ,as the world clients and end-users knowing the only really professional solar roof manufacture in Aisa and Oceania ,has brought a new idea of solar roof ventilators and solar heat collector in 2004,which now have already sold over 300000 pcs to housowners with a highly quality and lower price .Although it may not the full solution for house cooling ,but do much of contribution in energy saving ,and also bring a comfortable surroundings for us . price is very reansable as a real manufacture ! Both of that two products were originally designed and completed in USA ,and were fully protected by are full protected by U.S. Consolidated Patent Laws and the panent law of PRC . we keep the right of the recourse from any copy or reseller without our formal permission or authority