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1992. 06. ȸ»ç¼³¸³(¼­¿ï½Ã µ¿´ë¹®±¸ Àå¾Èµ¿ 464-3)
2002. 05. ISO 9001 ÀÎÁõ Ãëµæ (KFQ)
2006. 11. °Ç¼³Çù·ÂÁõÁø ´ë»ó (°Ç¼³±³ÅëºÎ)
2007. 10. ÇؿܰǼ³¾÷ ½Å°í (±â°è¼³ºñ)
2011. 04. BRASIL ¹ýÀÎ ¼³¸³(Younchang do Brasil Ltda. - Sao Paulo, Brazil)
2011. 08. UAE Áö»ç ¼³¸³ (Younchang Engineering Co. Ltd. - Abu Dhabi, U.A.E)
2014. 09 MEXICO ¹ýÀÎ ¼³¸³ (Younchang Mexico – Monterrey, Mexico)
2014. 09. º»»ç »ç¹«½Ç ÀÌÀü (¼­¿ï½Ã ¼ÛÆı¸ ¹éÁ¦°íºÐ·Î 41±æ 30)
2015. 05. ISO 14001 ÀÎÁõ Ãëµæ (AKR)
2015. 05. OHSAS 18001 ÀÎÁõ Ãëµæ (AKR)
2015. 06. USA ¹ýÀÎ ¼³¸³ (Younchang USA - Atlanta, USA)
2016. 03. MOROCCO Áö»ç ¼³¸³ (Younchang Engineering Morocco)
2016. 08. INDIA ¹ýÀÎ ¼³¸³ (Younchang Engineering INDIA (PVT) LTD
2016. 09. SRI LANKA ¹ýÀÎ ¼³¸³ (Younchang Engineering S.L (PVT) LTD
2017. 07. VIETNAM ¹ýÀÎ ¼³¸³ (Younchang Engineering Vietnam)
2018. 02. OMAN ¹ýÀÎ ¼³¸³ (Younchang LLC)
2018. 05. HUNGARY ¹ýÀÎ ¼³¸³ (Younchang Hungary KFT.)
2022. 04. POLAND ¹ýÀÎ ¼³¸³ (Younchang Poland sp. z o.o.)