Shanghai Zhongji Machinery Manufacturing Co. Ltd (“Zhongji” in short) was established in 1992. Our company has 3 factories located at the Qingpu and Jiading Industrial Zone in Shanghai which cover a total area of 50,000 square meters of land, with more than 600 staffs and workers. As the leading and reliable manufacturer of Sandwich Panel Production Lines, PU Foaming Machines and Roll Forming Machines, we are mainly engaged in the research & development of our products, machine manufacturing, plant designing, and talent training. We are the first drafter of the China National Standards for 3D Panel.