Yong Hoon Sung List of directors and agents named Yong Hoon Sung. Found 2 results. YONG HOON SUNG Registered Address: 7206 LYNDSEY WAY ELKRIDGE MD 21075 Appointed in one company. Go To Profile YONG HOON SUNG Registered Address: 2009 DALEWOOD CT. CROFTON MD 21114 Appointed in one company. Go To Profile