QST INTERNATIONAL CORP. 
QST INTERNATIONAL CORP. 
FOSHAN CITY GUANGQINGCHANG METAL PLASTIC CO., LTD. (powerchan)
FOSHAN CITY GUANGQINGCHANG METAL PLASTIC CO., LTD. (powerchan)
SACMA GROUP
SACMA GROUP
TANG AN ENTERPRISE CO., LTD.
TANG AN ENTERPRISE CO., LTD.
FALCON FASTENER CO., LTD. 
FALCON FASTENER CO., LTD.