Architectural Practice must embrace design for green buildings, as a vital element in a sustainable society. Many green buildings incorporate curtainwall facades that address the issues of environmental performance and material recycling. Through our experience in Japan's harsh environmental and climatic conditions, we have pioneered new environmental technologies. While collaborating closely with Architects, we are able to share the knowledge we have gained. We aim to realize their concepts, offering engineered curtainwall solutions that encompass all elements of design, procurement, manufacturing, construction, and maintenance, and at the same time, bring us closer to a sustainable society.