Alamat Gedung 7-16, No.188, South 4th Ring West Road, Beijing, China Surat yangshan@const-mach.com chenyoufeng@const-mach.com liuyapeng@const-mach.com Telepon Tuan Yang：15010377396. Tuan Chen：13801306377. Liu：15233730575. Jam beroperasi Senin-Jumat: 9 pagi hingga 6 sore Sabtu, Minggu: Tutup
