Tin is widely used as a material for soldering and plating because it is non-toxic and highly corrosion resistant and has a low melting point. Recently, the demand for tin has increased rapidly with the development of the electric and electronic industries, along with the expansion of its use as a raw material for next-generation secondary batteries. Cassiterite is the main ore mineral of tin, and more than 65% of the world's cassiterite reserves are situated in China, Indonesia, Myanmar, and Australia. In addition, some partial reserves are located in Uljin and Sangdong in Korea. Currently, research conducted in Korea has focused on securing tin resources to avoid dependency on imports. Technological development is required to secure stable tin supplies in the future.

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