HWA HSING SCREW INDUSTRY CO., LTD. 
HWA HSING SCREW INDUSTRY CO., LTD. 
TONG HEER FASTENERS (THAILAND) CO., LTD.
TONG HEER FASTENERS (THAILAND) CO., LTD.
JERN YAO ENTERPRISES CO., LTD. 
JERN YAO ENTERPRISES CO., LTD. 
SPEC PRODUCTS CORP. 
SPEC PRODUCTS CORP. 
HEBEI XINYU METAL PRODUCTS CO., LTD.
HEBEI XINYU METAL PRODUCTS CO., LTD.