Manufacture & Export of Asphalt Waterproofing Materials Bituminous Waterproofing Membranes 'Double-layered waterproofing systems : Asphalt Mastic & Asphalt Sheet Applications - Underground Parking Lot - Roof Top - Top Floor This is characterized to be the advanced waterproofing system in type of double waterproofing layers technically combined the Asphalt Mastic Membrane Layer made of ourselves specific "Asphalt Mastic" and "Waterproofing Sheet" applied with our Asphalt Mastic products and also specially reinforced with ourselves specific inorganic Polyester Spunbond. As our "Asphalt Mastic" is qualitatively developed with powerful elasticity and adhesiveness properties in inself, the adhesiveness of "Asphalt Mastic Membrane" to the concrete slabs, whichever vertical or horizonatal, and to the "Waterproofing Sheet" laid on the "Asphalt Mastic Membrane" is showing to be excellent. Such excellent adhesiveness shall minimize the cases of defects in the waterproofing. As our "Asphalt Mastic" is qualitatively developed to preserve long-lastingly the fluid properties in itself, "Asphalt Mastic" for the waterproofing membrane will be used by itself without any prior processes for the works, which shall definitely contribute to make waterproofing works much simple and efficient. The incomparable efficiency waterproofing performance and technology development of our MAS Waterproofing System and the superiority in the quality of our waterproofing products are officially recognized as the authentication by Korean Government(License certificate of New Technology, No. 204) and also as "Q" marks by Korea Machinery Meter and Petrochemeical Testing and Research Institute.