Shanghai Yangyang Metal Door&Window Co,.Ltd.Is located at No.335,Jingtang Road,Nanxiang Economic Development Zone,Jiading Distrct Shanghai,covering the land area of 30000 square meters.Its legal personal representative is Zhang Songbai.The company mainly the production and processing of the sercurity and fire door,which are all matched with license of specific products issued by Technology and Protection Office of Shanghai Municipal Public Security Bureau.the company has been authorized by the certificate of ISO9001 Quality System