2022-13, Development of Hydropower (Hydropower Construction)《水电建设》
Hydropower onstruction Stamp Title: Development of Hydropower (Hydropower Construction) Serial number: 2022-13 Stamp specifications: 50×30 mm in figure 1, 30 × 50 mm in figure 2 Perforation degree: one figure 13 degrees, two figures 13.5 degrees Number of pieces: 12 pieces (6 pieces/sheet each in the first and second figures) Specifications: 180×205 mm [...]