Shu Sing Chang List of directors and agents named Shu Sing Chang. Found 2 results. SHU-SING CHANG Registered Address: 9725 GLEN RD. POTOMAC MD 20854 Appointed in one company. Go To Profile SHU-SING CHANG Registered Address: 9909 HALL ROAD POTOMAC MD 20854 Appointed in four companies. Go To Profile