https://blog.gongquiz.com/2022/11/16/%ed%99%94%eb%ac%bc%ec%a4%91%eb%9f%89%ec%9d%b4-200kgf-%ec%a7%80%ea%b2%8c%ec%b0%a8%ec%9d%98-%ec%a4%91%eb%9f%89%ec%9d%b4-400kgf-%ec%95%9e%eb%b0%94%ed%80%b4%ec%97%90%ec%84%9c-%ed%99%94%eb%ac%bc%ec%9d%98/