1998. 07.  ¿Àõ»ê¾÷ÁÖ½Äȸ»ç ¼³¸³, ÀÚº»±Ý 2¾ï (Ãæ³² ¿¬±â±º ³²¸é ¼Û¿ø¸® 233-3)
 Establised O-CHOUN Ind. Co., Ltd.(233-3 songwon-ri, Nam-myeon, Yeongi, chungnam )
2002. 01.  º´¿ªÆ¯·ÊÁöÁ¤¾÷ü ¼±Á¤ - º´¹«Ã»
 Designated as exemption from military service for works (MMA)
2003. 03.  Çѱ¹»ê¾÷±Ô°ÝÇ¥½Ã ¢Þ ÀÎÁõ (KSF 4724, KSF 4731) - Çѱ¹Ç¥ÁØÇùȸ
 Qualified for KS Mark (KSF 4724 and KSF 4731) (Korean Standards Association)
2003. 05.  À¯¸ÁÁß¼Ò±â¾÷¼±Á¤ (2003. 5. 31~2012. 5. 31) - Áß¼Ò±â¾÷ÀºÇà
 Nominated as a promising (industrial Bank of Korea)
2004. 10.  ÁÖ½Äȸ»ç ¼¼¾ÆÁ¦°­ Çù·Â¾÷ü °ø·ÎÆÐ ¼ö»ó
 Accredited as an excellent company by the SE-A steel Co., Ltd.
2005. 09.  Å©¸°»ç¾÷Àå ÀÎÁ¤ °áÁ¤ - Çѱ¹»ê¾÷¾ÈÀü°ø´Ü
 Obtained certificate for clean business company. (Korea Occupational Safety Health Association)
2006. 04.  ¿Àõ»ê¾÷(ÁÖ) õ¾È°øÀå ¼³¸³ (õ¾È°øÀå : Ãæ³² õ¾È½Ã ¼ö½Å¸é Àå»ê¸® 691-5)
 Established O-CHOUN industry Co., Ltd.
2007. 04.  ÆÇ³Ú ÀÚµ¿È­½Ã½ºÅÛ µµÀÔ
 Installed automation line for glass-wool panel production
2007. 04.  Áغҿ¬Àç·á ¼º´É ÀûÇÕ ÆÇÁ¤ - Çѱ¹°ÇÀÚÀç½ÃÇ迬±¸¿ø
 GW panel passed semi-incombustibility test (Korea Comformity Laboratories)
2007. 07.  Ç°Áú°æ¿µ½Ã½ºÅÛ ÀÎÁõ¼­ (KS A 9001:2001/ISO 9001:2000) ȹµæ
 Qualified for ISO 9001(KSA 9001:2001/ ISO 9001:2000)
2007. 09.  Ãµ¾È°øÀå µðÀÚÀÎ µî·Ï (Á¦30-0463917È£) - ƯÇãûÀå
 Obtained new design rights (No. 30-0463917) (Commissioner)
2008. 02.  ¿¬±â°øÀå »óÈ£º¯°æ (¿Àõ»ê¾÷(ÁÖ) ¡æ (ÁÖ)¿ÀõÇÇ¿¡½ºÅØ)
 Changed the yeongifactory name (O-CHOUN industry CO., Ltd. ¡æ O-CHOUN P.S. TEC. CO., Ltd.)
2008. 04.
 ³»È­±¸Á¶ÀÎÁ¤ (°Ç¼³±³ÅëºÎ °í½Ã Á¦ 2005-122È£) ȹµæ - Çѱ¹°Ç¼³±â¼ú¿¬±¸¿øÀå
 Obtained fireproof structure certification of glass wool panel (Korea Institute of Construction Technology)
2008. 08.  (ÁÖ)¿ÀõÇÇ¿¡½ºÅØ º»Á¡ÀÌÀü(ÃæºÏ û¿ø±º ¿Á»ê¸é ȯÈñ¸® 54-9)
 Moved O-CHOUN P.S. TEC. CO., Ltd. (54-9, Hwanhee-ri, Oksan-myeon, Cheong won-gun, Chungbuk)
2010. 04.  ¿Àõ»ê¾÷ õ¾È°øÀå º¥Ã³±â¾÷ÀÎÁ¤ - ±â¼ú½Å¿ëº¸Áõ±â±Ý
2011. 04.  KCC ¿ì¼öÇù·Â¾÷üÀÎÁõ
 Accredited as an excellent Company by the KCC
2012. 03.  µðÀÚÀεî·Ï (Á¦30-0638186È£) - ƯÇãûÀå
 Obtained new design rights (No. 30-0638186) (Commissioner)
2016. 01.  º¥Ã³±â¾÷ÀÎÁ¤ (±â¼ú½Å¿ëº¸Áõ±â±Ý)