In 1985, we began our journey by establishing Daesang Tech., which manufacutred vinyl adhesive products, in Jangchung-dong, Jung-gu, Seoul, and we produced OEM products. In 2002, we have acknowelged the fact that fishing weights were often caught in crevices of rocks and buried in the ocean, which was the cause of polluting the enviroment. We developed an eco-friendly fishing weight that could adjust its size when an angler pulls a fishing rod. Since then, we have developed various products to cope with the current issues.