Zehao Windows Manufactory Ltd. is a subsidiary of ZECH Group which is located in Austria. As a family enterprise with more than one hundred years' tradition of window production, ZECH Group delivers windows with high quality to customers in Europe. In 2003, ZECH expanded business to China by means of establishing a German course in Quzhou College of Zhejiang Province. After one year's German course, our employees were sent to Austria for two months' professional training. The quality of product, as we believe, is based on the quality of staff.