2011

01.2011 Acquired UL certification for refractory coating material ' Esscort ' for the first time in Korea, and acquired GR mark for its Neo Drain Board product
(Ministry of Knowledge Economy)

2010

12.2010 Acquired high-efficiency equipment certification for its automatic heating
thermostat (NRM-15S, NRS-15S, VCM-10K)

2009

05.2009 Acquired an environmental sign for its refractory coating material product
(Ministry of Environment)
Acquired high-efficiency equipment certification for its automatic heating
thermostat (NH-PS05)

2008

05.2008 Acquired KS certification for heat insulation mortar (KSF 4040)

04.2008 Acquired eco-friendly construction materials certification

2004

11.2004 Acquired KS certification for metal roof tile product (KSF 4751)

2000

11.2000 Headquarters and Gyeongju factory acquired ISO 9001 certification (DNV
Certification Authority)

1998

03.1998 Asan factory acquired ISO 9001 certification (Korea Productivity Center)

1993

11.1993 Acquired Korea Resistor of Shipping Type Approval Certificate (Korea
Register of Shipping)

03.1993 Acquired Bureau Veritas Type Approval Certificate (France Register of
Shipping)

1985

12.1985 Acquired KS certification for its water repellency perlite insulation material
product, a first in Korea (KS F 4714)