OKI Honjo Factory H1 Building is a contemporary industrial facility completed in 2022, showcasing modern manufacturing architecture. Located in Honjo, Saitama Prefecture, this structure exemplifies functional design principles essential to modern factory operations. Designed by Tasei Construction, the building serves as a factory, workshop, and warehouse complex, demonstrating efficient spatial planning and practical engineering solutions. The H1 building represents current standards in industrial construction, combining durability with operational efficiency. Its completion in 2022 reflects contemporary architectural approaches to manufacturing facilities, making it a notable example of modern Japanese industrial architecture for those interested in functional building design and factory infrastructure.