About UsTop page > About UsManagement philosophy Management philosophy of Diamond Engineering.Company overview An overview of Diamond Engineering.History The company history of Diamond Engineering.Office, affiliates It is an office, affiliates of Diamond Engineering.Compliance In Diamond Engineering, it determines "the basic guideline about the company activity" and establishes "an action standard" based on the guideline. ISO9001 Diamond Engineering acquires the certification of quality management system standard ISO 9001. SDGs Declaration Diamond Engineering Co., Ltd. supports the "Sustainable Development Goals (SDGs)" advocated by the United Nations and declares that it will make efforts to achieve the SDGs.Trading performance / Delivery Our equipment and appliances have been delivered not only in Japan but also overseas and have been well received.