Rengo was the first company in Japan to become involved in the corrugated business and has been successful in making one innovative product after another. The driving force behind this is Rengo's research and development structure led by the Central Laboratory. The Central Laboratory carries out research and development in a broad range of fields that deal with Rengo's main products. The research covers an extremely varied field from the realization of a wide range of packaging functions, such as water resistance, moisture proofing and freshness retention, to the development of environmentally friendly products and new functional materials such as Cellgaia. The laboratory also undertakes development of energy-saving and resource-efficient manufacturing methods and waste recycling technology, as well as research involving chemical analysis relating to product safety and quality and environmental analysis aimed at protecting the environment.