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​Dang Soo!
WDU International
Call or Fax (Korea)
011-82-31-666-2480

(in the US or for English) 
Contact: SBN James Pumarejo
Phone: (520) 290-9200
Email: [email protected]

WDU-USA
Contact: SBN Kristin Duethorn
Phone: (860) 377-0582
E-Mail: [email protected]
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​Contact your Regional Director