1.  

    DAE JIN CO. Ltd

    Chungnam   327 Sodong-ri Umbong-myon Asan-shi Chungnam

  2.  

    HAN KUK MAGNET CO. Ltd

    Gyeongnam   33-45 Sangdae2-dong Chinju-shi Gyeongnam

  3.  

    KWANG JIN ABRASIVE COMPANY

    Gyeongnam   332-2 Chongd-ri Chisu-myon Chinju-shi Gyeongnam

  4.  

    OKYANG STONE CO. Ltd

    Gyeonggi   182-3 Kajae-ri Shinbuk-myon Pochon-kun Gyeonggi

  5.  

    KOREA OMYA INC.

    Chungbuk   559-12 Kangje-dong Chechon-shi Chungbuk

  6.  
  7.  
  8.  
  9.  

    HYUN DAE GRINDING WHEEL CO.

    Seoul   58-2 3gaYangpyong-dong Yongdungpo-ku Seoul

  10.  
  11.  
  12.  

    DONGIL INDUSTRIES CO. Ltd

    Gyeongbuk   130 Chenae-dong Nam-ku Pohang-shi Gyeongbuk

  13.  
  14.  

    ORIENT 21

    Jeonbuk   513-16 Oyang-dong Iksan-shi Jeonbuk

  15.  

    SAM YANG CERAMICS CO.

    Gyeonggi   228 Sangma-ri Taegot-myon Kimpo-shi Gyeonggi

  16.  

    KANG WON CERAMIC CO. Ltd

    Gangwon   290 Odan-ri Kujong-myon Kangnung-shi Gangwon

  17.  

    TONG YANG CEMENT CORP.

    Seoul   23-8 Youido-dong Yongdungpo-ku Seoul

  18.  

    SAMWOO STONE INDUSTRIAL CO.

    Gyeongnam   277-9 Tanmok-ri Taegok-myon Chinju-shi Gyeongnam

  19.  
  20.