Invention Patent Granted for Letterpress Printing Device
The State Intellectual Property Office of China has granted an invention patent (No. ZL 2024 1 0337516.9) for our proprietary letterpress printing apparatus, strengthening our technical IP portfolio.
On November 21, 2025, the China National Intellectual Property Administration (CNIPA) officially granted invention patent No. ZL 2024 1 0337516.9 — "A Letterpress Printing Device" — to our affiliated manufacturing entity.
This patent represents a key advance in our letterpress printing technology, enabling higher registration accuracy, reduced set-up time, and improved ink-transfer consistency. The invention directly benefits customers requiring tight colour tolerances on cigarette packaging and self-adhesive labels.
To date, the Muchen group holds 20+ granted patents spanning printing equipment, adhesive label structures, and packaging materials — providing clients with assurance that the technologies underpinning their products are robustly protected and continuously improved.
