Chinalco News: November 11-14, 2015 China International Door and Window Curtain Wall Expo was grandly opened in Shanghai·Hongqiao·National Exhibition Center. Chinalco.com (Booth No.: 1.025), as the premier cooperation media of the exhibition, will record the progress of the exhibition. The following is a picture of the metalworking aluminum door and window machinery exhibition hall collected by the reporter of Chinalco.com.