Due to abnormal weather caused by climate change in recently years. natural disaster damages caused by local torrential rains have been increased over the world. Particularly. Korea is very vulnerable to landslide disasters because more than 63% of the country is mountainous and it suffers from unpredictable localized heavy rainfall during monsoon season every year. https://www.chiggate.com/miller-multimatic-235-255-tig-kit-supply/