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城南总部

京畿道城南市中院区遁村大路 544 (上大院洞 434-7)

544, Dunchon-daero, Jungwon-gu, Seongnam-si, Gyeonggi-do, Korea

  • TEL_ 031-737-8888
  • FAX_ 031-737-8800
  • webmaster@yoisys.com, oversea@yoisys.com

南部分公司

釜山市北区金谷大路 287, 1410号 (华明洞)

1401,287, Geumgok-daero, Buk-gu, Busan, Korea

  • TEL_ 051-362-8853
  • FAX_ 051-362-8854

Overseas Offices

  • Vietnam Branch Office    
  • 85 Khu 10B, Dai Phuc,Bac Ninh City, Bac Ninh Province, Vietnam TC2300999562   

    T. +84-34-983-1961
    E. yscos@yoisys.com

  • Indonesia Branch Office
  • SME Tower, 6th Floor, Kav. 94, Gatot Subroto St, Pancoran, South Jakarta, Indonesia 12780

    T. +62-821-1331-6669 
    E. indonesia@yoisys.com