SHUN DEN IRON WORKS CO., LTD. 
SHUN DEN IRON WORKS CO., LTD. 
YI CHUN ENTERPRISE CO., LTD. 
YI CHUN ENTERPRISE CO., LTD. 
SHANGHAI FAST-FIX RIVET CORP. 
SHANGHAI FAST-FIX RIVET CORP. 
HWAGUO INDUSTRIAL FASTENERS CO., LTD.
HWAGUO INDUSTRIAL FASTENERS CO., LTD.
SHANGHAI DELTA METAL PRODUCT CO., LTD.
SHANGHAI DELTA METAL PRODUCT CO., LTD.