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64 tobaccoasia Issue 6, 2025 November / December You can view the latest issue of TOBACCO ASIA magazine and TOBACCO ASIA's archived issues and searchable content at www.tobaccoasia.com All free. No passwords. No paywall. Just click and read. We'd like to let you in on an industry secret By the new century, consumer demands for cigarette products shifted from mere physiological satisfaction to a greater emphasis on sensory comfort, refinement, and distinctiveness. Simultaneously, pressure for tar and harm reduction within the industry in- creased, and the scarcity of premium raw materials became more pronounced. All these factors forced innovation in blending technology. The successful practices of leading Chinese cigarette brands further demonstrated that their core competitiveness stemmed not solely from top-tier tobacco leaves, but from a deep functional under- standing of raw materials and precise, digitally-enabled blending techniques. Thus, the revolutionary transition from "looking at grade" to "using function," and from horizontal blending to vertical blending, evolved from the exploratory prac- tices of leading enterprises into a consensus direction for the development of China's tobacco industry. The logic behind the shift from "grade" to "function" Focusing solely on grade led to severe product homogenization, with high-end prod- ucts under various brands competing to use limited supplies of top-leaf from a few specific origins, resulting in convergent product styles. Emphasizing function, how- ever, allows blenders to construct unique and difficult-to-replicate style characteristics based on the functions of leaves from different origins. Coupled with the scarcity and high cost of top-grade leaf, the horizontal blending model reliant solely on high-grade leaves was not only cost-unsustainable but also led to the wasteful use of premium resources. The functional concept expands the blending perspective from the narrow high- grade echelon to a broader spectrum of leaf grades. This allows the limited supply of top-leaf to be concentrated on imparting a noble main aroma theme, while using technically treated, mid-grade or upper-stalk leaves with clearly defined functions to construct the smoke body and satisfaction. This greatly alleviates resource pressure and enhances raw material usage efficiency and blending cost flexibility. The implementation of this philosophy is inseparable from technological support. Over the past decade, the maturation of technologies such as rapid NIR (near-infrared) spectroscopy detection, big data analysis, and AI-assisted blending has made it possible to quickly and non-destructively obtain multiple chemical indicators for large batches of leaf samples and establish predictive models linking them to sensory function. Blenders no longer rely solely on personal experience; they can now perform multi-objective, constraint-based digital and intelligent blending optimization using vast raw material databases and functional attribute tags. Scientific methods have trans- formed raw materials from a "black box" state into "components" with transparent functional parameters, which is the technical prerequisite enabling vertical blending. "Vertical blending" reshapes product logic with an architectural mindset The metaphorical use of "horizontal" and "vertical" accurately captures the essential difference between the two technical approaches. The horizontal blending mindset is planar and substitutive. Its core logic is to find raw materials with similar attributes for compatibility, aiming to maintain the overall style stability of the blend or make fine adjustments within a certain stylistic dimension. The vertical blending mindset is three-dimensional and architectural. Its core logic treats leaves of different grades, origins, and stalk positions as modules possess- ing different functional characteristics. The blending process is like building the pillars and beams of a house, identifying which raw materials provide the smoke base and combustibility, which complement the smoke volume and concentration, and which impart characteristic aroma and improve aftertaste. It focuses on who is responsible for what function and allows for lower-grade leaves that excel in a specific function to play a key role. The blending of the Chunghwa brand is an early exemplary practice of the ver- tical blending philosophy. It does not simply pile up the highest-grade leaves from all over the country. Instead, based on a profound understanding of the functional characteristics of leaves from hundreds of regions, it meticulously selects characteristic leaves from multiple areas. These leaves are used in varying proportions, some even in