To strengthen the image of LG Hausys Z:IN as an integrated interior material brand, the renewal to unify the design of Z:IN Sample Books started as they are the first visual information to choose interior materials. User-centered identity index is designed to find the book easily in a crowded store, to develop the client convenience and unify the brand awareness which has been diffused by individual sample books. Variation is available by kinds and shapes while the white square label shows the product family at a quick look. The consistent graphic motif in various shapes efficiently establishes Z:IN brand image and improves trust and values.