Development Zone, Yunnan Province, adjacent to Southeast Asian countries. Its own plant office building 10,000 square meters, the annual output of doors and Windows up to 300,000 square meters, over the years adhere to do only one thing - doors and Windows, is a research and development, design, production, production, processing, sales, installation as one of the enterprises, the production of products have independent intellectual property rights, national invention patents 3, international patent 1, Its own trademark "Der wind natur" and logo .