DongShin Trading Co. in Busan that is the second city of Korea and a port city sells GIGA PHONE which is a portable amplifier and is responsible for the after-sale service with specialty.Istead of JUNSUNG TECH, GIGA PHONE&＃39;s Manufactory, our company monopolizes it in the Japanese market, and we will do best for overseas sale to use GIGA PHONE together with people in all over the world.We will manage our product&＃39;s quality strictly, improve their effeiceny. Most of all we will make an effort with strong passion to be a great company that win the consumer&＃39;s hearts.