North America

GST International Inc.
2345 Waukegan Rd, Suite 170
Bannockburn, IL 60015 USA
Tel: +1 847-374-1559 ext 10
Fax: +1 847-374-1909
Email: michael@gstool.com
           emily@gstool.com
Website: www.gstool.com

China Factory
554 Gonghu Road
Wuxi, Jiangsu 21421 China
Email: michael@gstool.com