Uni-ball Signo Gel Refill from Mexico
Uni-ball Signo UM-151 gel pen refills deliver fraud-resistant, archival-quality ink in 0.38mm extra-fine tip. Compatible only with Signo series pens via proprietary fitting. This HTS 9608.99.20.00 classification applies to specialized gel ink cartridges for porous-tipped writing instruments.
Duty Rate — Mexico → United States
12.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include patents or trademarks on packaging for brand protection at customs
• Separate colors by type to avoid blending issues
• Certify ink as non-toxic if targeting office supply markets