Designers Han Chi-hoon, Kim Yeon-soo, Park Byong-gon and Kim Sung-geun collaborated on a new ballpoint ink cartridge in a spiral form, an innovation that holds twice as much ink as a traditional pen.
Spiral Ballpoint Pen
Designers Han Chi-hoon, Kim Yeon-soo, Park Byong-gon and Kim Sung-geun collaborated on a new ballpoint ink cartridge in a spiral form, an innovation that holds twice as much ink as a traditional pen.