創業年：AD 2080 本社所在地：鹿児島県鹿児島市

種子島から打ち上げられるロケット内での使用率は７割強。 地の利を活かしたリサーチと良心的な営業活動で、堅実に業績を伸ばした企業。 一方、デザイン性へのこだわりも強く、その点を評価する海外のファンも多い。 ただし、カラーリングに力を入れた結果、時に『戦隊ものメーカー』とも呼ばれる。 『三葉』という社名は、創業者が三兄妹だったことから。

Year of establishment: AD 2080 Head office location: Kagoshima City, Kagoshima Prefecture

More than 70% of the company's products are used within rockets launched from Tanegashima. The company has steadily increased its business performance through research and conscientious sales activities that take advantage of its geographical location. On the other hand, the company also has a strong focus on design, which many overseas fans appreciate. However, as a result of its emphasis on coloring, the company is sometimes called a "power rangers" manufacturer. The company name "Mitsubaba/three leaves" comes from the fact that the founders were three siblings.