Legacy Fortran Punch Card Paperboard from Mexico
Heavyweight bleached kraft paperboard sheets, kaolin-coated, cut into cards or strips for Fortran programming punchcard input to old mainframes. Over 150 g/m² with chemical process fibers >95%, unpunched for custom encoding. Ideal for archival computing restoration projects.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• For restoration use, attach affidavits of end-use as punchcard stock to counter 4820 loose sheet claims
• Sample testing for uniform bleaching; non-uniform shifts to 4810.39