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        中國 美國 日本 臺灣 俄羅斯 歐洲
        USA Subsidiary
        Sonata, LLC
        Address: PO BOX 1099,25 Francis J.Clarke Circle,Bethel,Connecticut 06801
        Contact: Leon Chang
        Tel.: 86-13801998337
        E-mail:changll@natachem.com
        Regional agency in Japan
        Highchem Technology Company Limited
        Address: 〒104-0032 東京都中央區八丁堀4-7-1 第3桜橋ビル8F
        Tel.: 03-5542-0566
        Fax: 03-5542-0570
        Contact: Wanling Han
        E-mail: wanling@highchem.co.jp 
        Regional agency in Taiwan
        Challentech International Corp.
        Address: No. 21, Taihe Road, Zhubei City, Hsinchu County 30267
        Contact person: Jin Zhenren
        Tel.: 886-3-5536525
        Fax: 886-3-5536515
        E-mail: jacky_king@challentech.com.tw
        • Regional agency in Taiwan
          Challentech International Corp.
          Address: No. 21, Taihe Road, Zhubei City, Hsinchu County 30267
          Contact person: Jin Zhenren
          Tel.: 886-3-5536525
          Fax: 886-3-5536515
          E-mail: jacky_king@challentech.com.tw
        • Regional agency in Japan
          Highchem Technology Company Limited
          Address: 〒104-0032 東京都中央區八丁堀4-7-1 第3桜橋ビル8F
          Tel.: 03-5542-0566
          Fax: 03-5542-0570
          Contact: Wanling Han
          E-mail: wanling@highchem.co.jp 
        • USA Subsidiary
          Sonata, LLC
          Address: PO BOX 1099,25 Francis J.Clarke Circle,Bethel,Connecticut 06801
          Contact: Leon Chang
          Tel.: 86-13801998337
          E-mail:changll@natachem.com
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