NOTICE  

GGM ISO 9001 & 14001 CERTIFICATE Apr. 05. 2019 ~ Apr. ..

Received achievement award at the Small and Medium Busi..

Customer Center
  • +82-32-664-7790
  • Headquarters/1st Factory
  • +82-32-684-7791
  • Research Institute/2nd Factory
  • Email
  • ggm@ggm.co.kr
  • Weekday
  • AM 09:00 ~PM 06:00
  • Lunch Time
  • PM 13:00 ~PM 13:50
    (Saturdays, Sundays and
    public holidays are closed)