Founded in 2010, the company is an international group specialized in the sales, design, production, installation and after-sales of doors, windows and curtain walls products. The company has successively established Beijing Dorwin Decoration Engineering Co., Ltd., Shenyang Dorwin Engineering Consulting Co., Ltd., Philippines Alcatop Aluminum Inc. We have more than 20 years of manufacturing experience and 10 years of exporting experience. Our products have the CE and other international certification and have been sold to more than 50 countries in the world. The company owns two production bases in Tianjin and Hebei. Tianjin production base is located in Jizhou Devel...