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U.S. Corporate Office
4310 Campbell Rd.
Houston, TX 77041
Phone: 800-549-0043

Europe Office
Van Hilststraat 4
5145RL Waalwijk, The Netherlands
Phone:+31 416 71 21 41

China Office
Room 1201D, Beijing Excel Centre
No.6, Wudinghou Street, Xicheng District
Beijing, 100033 P.R.China
Phone: +86-10-8800-3750