"Structural plywood is a wood-based panel material used in structurally critical components of wooden buildings to ensure seismic resistance and durability. ○Product Standards Complies with various standards stipulated in the Japanese Agricultural Standard (JAS), including ""bending tests,"" ""adhesive strength tests,"" and ""formaldehyde emission tests."" ○Technical and Functional Characteristics ・Cross-laminated structure: Three or more veneers are bonded with their grain directions perpendicular to one another, reducing anisotropy in in-plane shear and bending performance. ・Superior mechanical performance: High nail-holding capacity and rigidity, functioning as load-bearing walls and structural diaphragms that resist horizontal forces during earthquakes. ○Technical Data ・Standard product dimensions: Width 910–1,230 mm × Length 1,820–3,030 mm, etc. ・Thickness: 9 mm, 12 mm, and 15 mm for floor and wall underlays; 24 mm and 28 mm for joist-free flooring systems. ・Strength grade: Grade 2 and Grade 1 ・Adhesive durability: Phenolic resin adhesive is used, achieving the highest JAS classification of ""Special Class (Toku-rui)"" for water and moisture resistance. ・Low formaldehyde emissions: F☆☆☆☆ grade (highest grade). ○Applications and Usage in Buildings ・Wall underlays and load-bearing walls in traditional wooden post-and-beam construction and platform frame construction (2×4 method). ・Floor underlays using thick plywood (24 mm or more), allowing floor panels to be fastened directly without the need for joists. ・Roof underlays (sheathing boards): Used as base boards to support roofing materials such as roof tiles and slate. ○Features of the Head Office Plant ・The Head Office Plant commenced operations in 2000 and serves as the core plant of the Nisshin Group, specializing in the production of long-length plywood (2,400 mm or more in length). ・In addition to standard Grade 2 structural products widely distributed in the market, the plant also produces Grade 1 products used in structurally critical components such as load-bearing walls."