Máy in màu Tự làm
Gelsonlab HSTM-067 Đồ chơi Khoa học Giáo dục Máy in màu tự làm
Máy in màu Tự làm uses the printing method of red and blue copy paper, and completes the printing experiment by roller, tracing pen, cartoon paper, cartoon film and other tools. Understand the development history of printing in China (engraving printing - movable type printing - cylinder printing)