| 2017. 08 | Developed Hip Rest PU Foam for Hyundai Motors(Cheonjoo Factory) for Electric Hydro bus |
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| 2015. 12 | Approved application mill for Polygiene |
| 2015. 05 | Established Jeongsang PUS Co.,Ltd |
| 2015. 01 | Developed heat expansion Polyurethane foam |
| 2014. 01 | Approved maker by Korea Gas Safety Corp for gas containing materials GAS PU Foam |
| 2009. 06 | 2nd partner maker for SDI(Samsung) for Gate FLAP PU Foam |
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| 2005. 11 | 2nd Partner Maker for Hyundai Motors(Cheonjoo factory) for Big bus and truck |
| 2005. 01 | 2nd Partner for Ssangyong motors(Pyengtag factory) |
| 2004. 03 | 2nd parnter for Livart(Furniture company for PU Edge System |
| 2003. 06 | Expansion and merged 2nd factory as one |
| 2002. 11 | Export PU Arm Rest & Memory Foam Pillow to Canada |
| 2002. 08 | Export Memory Foam Pillow to Japan |
| 2001. 04 | Production of Memory Foam Pillow |
| 1999. 03 | Established Jeongsang PU TECH |
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| 1995. 06 | Registered Vendor by LG Chemical (Cheongjoo factory) at PU Div. |
| 1995. 02 | Founded China Production in Qingdao at Shangdong Province |
| 1994. 04 | Registered vendor by General Electric in USA for PU ARM REST |
| 1993. 08 | Converted Jeongsang Engineering into Jeongsan PU TECH as limited company |
| 1990. 07 | Established Jeongsang Engineering |