Diamond siding boards are natural wood substitute, are suitable for both indoor and outdoor decorations and support various applications. With the modern "Autoclave" production technology that is free from asbestos, this results in an environmental-friendly product. For primary constituents, this is produced from Portland cement, natural fibers fine-grain sands. The product features attractive and durable wooden texture, exhibiting high tolerance to all types of weather, non-shrinkable, safe from termites and weevils; and available in different colors. With superior quality and distinctiveness than real wood, the product also helps to preserve the natural environment.