SHANGHAI - Bookcase. External structure in black stained or thermo-treated oak. Inner shelves in Ductal® Cement. Ductal® Cement: An extremely high-technology product, the fruit of years of research by Lafarge, the world leading company in cement production. Cement mixture with exceptional technical characteristics and unlimited possibilities. Composed of organic fibres, it may be recycled as aggregate at the end of its life cycle. The Ductal® has been inserted between durable materials, therefore guaranteeing a product lifetime of at least 50 years. The colour does not change, even when exposed to the sun.