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1989.06 ÁÖ½Äȸ»ç ±ÝÈ£ ¿£Áö´Ï¾î¸µ ¼³¸³
1992.11 Àü±â/°èÀå ÇØ¿Ü°ø»ç Âø¼ö (Jubail, »ç¿ìµð ¾Æ¶óºñ¾Æ)
1994.09 ÁÖ½Äȸ»ç µ¿¿µ ¿£Áö´Ï¾î¸µ (»óÈ£ º¯°æ)
1998.07 ISO 9002 ǰÁúÀÎÁõ Ãëµæ (Çѱ¹´É·üÇùȸÀÎÁõ¿ø)
1998.08 »ç¿ìµð ¾Æ¶óºñ¾Æ Áö»ç ¼³¸³ / Joint-Operation ü°á
(Khalid S. Al-Shahrani Est. for Contracting)
2005.12 īŸ¸£ Áö»ç ¼³¸³ (TOKAI Est.)
2006.06 ¿À¸¸ Áö»ç ¼³¸³ (OEC E&C LLC.)
2009.07 ¹Ù·¹ÀÎ Áö»ç ¼³¸³ (Dong Yeong Bahrain Co., Est.)
2009.11 Abu-Dhabi Áö»ç ¼³¸³
2010.05 Çʸ®ÇÉ Áö»ç ¼³¸³ (DYP Co., Inc.)
2013.05 º£³×¼ö¿¤¶ó ¹ýÀÎ ¼³¸³ (DYENCO S.A.)
2013.12 Åõ¸£Å©¸Þ´Ï½ºÅº Áö»ç ¼³¸³ (Turk. Dong Yeong Branch)
On-going work: Tihama(HHI/Saudi) / Sadara(HDEC/Saudi) /
TORE(HEC/Turk.) / UTOS(HEC/Uzb.) / RB4 (GS/Saudi) /
Polymer(Samsung Eng./Uzb.) / SSPP(HHI/Saudi)