Daeyoun co., ltd.

1984	Established a molding company.
1992	Built the 2nd plant with the start of the injection molding business.
1996	Obtained KS Certificate KS M 3515 - gas. Obtained KS Certificate KS M 3411 - water.
1997	Obtained KPS M2015-certificate of the EF fittings for water.
1998	Passed the test by the Korea Gas Safety Corporation (KGS)on PE ball valve.
1999	Obtained the certification mark on EF fittings. Registered EF fittings and ball valves as a new product in China. Obtained the ISO 9002 certificate.
2000	Obtained KS M 3529 - ball valve certificate. Obtained the EM certification mark on EF fittings for gas.
2001	Built a plant in Tianjin, China.
2002	Received approval by Korea's first CE (EN 1555). Passed the gas quality inspection by Osaka, Japan. Received approval by Japan Gas Appliances Inspection Association (JIA). Awarded 3 million dollar Export Tower.
2003	Obtained Quality Certificates - ISO 9001:2000 and KSA 9001:2000.
2004	Received approval in the American Society for Testing and Materials (ASTM) standard.
2005	Awarded a prize as the world's first-class products in Korea. Obtained the certificate for PVC pipe fittings for sewage - KPPS M 302. Obtained the certificate for the stiffness of PVC gutter for sewage - KPPS M 303.
2007	Obtained the certificate for PE electric fittings - KS M ISO 8085-3. Obtained the certificate for PE spigot fittings - KS M ISO 8085-2. Obtained the certificate for PE reducing fittings - KS M ISO 3515. Obtained the certificate for PE valve for gas - KS M ISO 10933. Obtained the certificate for manual valve - KS M 3529.
2009	Awarded 5 million dollar Export Tower.
2010	Obtained the TUV certificate for EF fittings. Obtained ISO 14001:2004 and KS 14001:2009.
2011	Obtained the certificate for EF fittings for gas in Argentina.
2014	Awarded 10 million dollar Export Tower.
2018	Relocated to and registered as the Asan plant in South Chungcheong Province.
2019	Established the 2nd plant in Asan.7