Last November 30 Portland cement, our company, has acquired eco-friendly building materials certification (best grade) from the Korea Clean Air Association. Green building certification system is the material Korea Clean Air Association is leading eco-friendly certification system of the Republic of Korea certified to strict evaluation and assessment of chemical emission level targets domestic construction materials manufacturers. Thus now our company holds the best rating for 7 products (SL, Remy fixes 17000, Portland cement, polyester Fix 300, Fix 600 poly, poly-2 fixes, pasting floating tiles) and are now recognized as being eco-friendly building materials company to hold HB Marks.