Where Form Meets Function in Perfect Harmony
The legendary 1:√2 ratio means perfect scaling at any size. Whether you're an architect, designer, or business professional, A4 maintains its proportions when folded.
Used by professionals worldwide, A4 breaks down language barriers and connects global teams through standardized documentation.
From boardroom presentations to creative portfolios, A4 delivers a clean, professional look that commands respect.
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Global Usage
The A4's 1:√2 ratio isn't just mathematics – it's a revolution in standardization. When folded, each A-series sheet maintains perfect proportions, making it the choice of professionals worldwide.