Hello, I’m Jeongmo Han.

For over 20 years, I’ve been designing, sketching, and teaching. Along the way, I created tools that didn’t exist but were truly needed.

After years of effort and refinement, the CLEARLINE Pen for cleaner lines and the Y-Ruler for effortless 120° perspective were born.

And now, I’m introducing the IDEALINE Sketch Note, a new tool created for writing ideas, sketching freely, and sharing your thoughts with others.