This is an effective way to prevent the entry of rodents and insects, which caused great damage to crops in subtropical Taiwan in the past.
礦研所在國內資源的探勘方面，以大屯山鋁礬土的發現最受重視。鋁，是國防、民生工業中不可或缺的金屬材料。過去，我國所需煉鋁原料「鋁礬土」都從國外進口。