Rettenmaier Japan Co., Ltd.

J. Rettenmaier & Söhne GmbH & Co. KG (JRS Group) is an independent, owner-managed family company that has grown into a world leader in the research, development, and processing of innovative organic fibers from renewable vegetable raw materials. Established in 1878 by Jakob Rettenmaier as a grain and oil mill in Rosenberg, Germany, the company embarked on a new industrial chapter in 1938 with the production of industrial wood fibers, ultimately evolving into the globally active JRS group we know today.

The foundation of JRS’s success is its unique JRS Plant Fiber Technology, driven by its innovative Enhanced Process Technology (EPT). This proprietary system uses advanced process engineering to transform valuable natural substances—such as cellulose, wood, cereal, and fruit fibers—into highly functional and specialized forms, including microfibers, granules, pellets, and specific dosage forms. This technological edge, achieved through continuous in-house development and mechanical construction, guarantees worldwide standards for production quality, efficiency, and sustainability.

JRS products and solutions are integral to a wide range of global industries, categorized into three main business areas:

Life Science: Dedicated to making human and animal health and nutrition sustainably better. This includes offering a broad portfolio of pharmaceutical excipients and coatings (e.g., MCC, Croscarmellose) that enhance the functionality of tablets, as well as dietary fibers that contribute to healthier food products.

Fiber Solutions: Focuses on functional fibers and additives for modern industry. These products are critical components in technical applications such as chemistry, plastics, road construction (asphalt stabilizers), filtration, and building materials, where they improve performance, sustainability, and cost-efficiency.

Consumer Goods: Provides functional products that simplify consumers' everyday lives, including high-quality products for animal hygiene (e.g., cat litter) and ecological fuel pellets.

Led by CEO Josef Otto Rettenmaier, the JRS Group is guided by a commitment to long-term perspective, stability, and future-oriented action, which stems from its independence as an owner-managed entity. This philosophy provides maximum security for its customers and employees and drives continuous innovation. The company's commitment to sustainability is evident in its reliance on renewable raw materials and its conscious effort to employ environmentally friendly processes in development, raw material selection, and processing. With its headquarters firmly rooted in Rosenberg, Germany, and a global network of over 90 production and sales locations, JRS ensures optimum supply security and provides comprehensive, customized application knowledge to its worldwide clientele, truly setting the tone for global problem solutions related to health, nutrition, and resource efficiency.