Comprehensive printing industry domain skill for analyzing Excel product masters, validating pricing tables, calculating print costs, and ETL data migration. Covers terminology (trim size, bleed, pansu), MES code parsing, color-coded sheet interpretation, formula error detection, quantity discount tiers, cross-file paper name validation, and Excel to JSON/SQLite conversion. Use when working with printing company spreadsheets, auditing price tables, generating quotations, or migrating product catalogs to databases.