DER is a group company focusing on supply most suitable products as clients' requirement. In our 20 years experience, offer utmost support on price, quality and service.DERACP is professional manufacturer in China focusing on ACP sheets, experience over 20 years. We produce Aluminum Composite Panel in all qualities for different applications.DERTEX is professional manufacturer and supplier of waterproof garments for more than 20 years.lt is a company specializing in the design, production and sales of professional high quality waterproof pants, fishing pants, raincoats and more.DER Building industrial established in 2005. The company's address is located in Liantang Industrial Park, Qingpu, Shanghai. The company covers an area of 20,000 square meters. It is a high-end Aluminum windows Systems, Aluminum sliding windows and doors Systems, Commercial sliding window China manufacturer , which integrates independent research and development, design and production. DER Building adhering to the "passion, creativity, efficiency, and win-win" spirit of enterprise, "innovative design ingenuity quality" for the purpose of the enterprise, aims to create China's first brand of custom aluminum window and door of China manufacturer!