Use double glue for printing red heads. Red-headed documents are all printed with 70 or 80g double offset. "Red-headed documents" is not a legal term, but refers to government agencies at all levels. It mostly refers to the common name for documents issued by the central government with big red text titles and red seals. Double offset is mainly used for lithographic (offset) printing machines or other printing machines when printing higher-end color prints. It is suitable for printing single-color or multi-color book covers, text, inserts, pictorials, maps, posters, color trademarks and various Paper for packaging products.