- Quality Assurance
- All retractable pen refills undergo 8-hour double drop leakage test
- Recommended Reasons
- Quick-drying ink, tungsten carbide ball, double drop leakage test, soft rubber grip
- Grip Design
- Triangular pen grip with fingerprint positioning for correct writing posture
- Writing Angle
- Pen angle greater than 50° for comfortable writing
- Ink
- Quick-drying ink for continuous writing without smudges
- Smooth Writing
- Ensures smooth writing experience without skipping or ink breakage
- Ink Flow
- Spring self-locking structure with bullet tip and imported ink for consistent ink flow
- Leakage Prevention
- Ballpoint remains closed when not in use and evenly dispenses ink when in use
- Quality Control
- Double inspection to prevent ink leakage according to 6 Sigma standards
- Ergonomic Design
- Soft rubber grip with dual-color injection molding for ergonomic comfort
- Clip Design
- Convenient pen clip for easy carrying on clothes or books
- Multi-functional
- Suitable for daily study, office work, note-taking, and highlighting