Keumkang Glass Wool is made from high quality, acid and weather-resistant raw materials that go through the most advanced high speed centrifugal rotary process. For the fibers produced through the process are so fine, they have excellent sound-proof and long lasting thermal insulation property after being formed as a complete product which is elastic and resilient for easy handling on site. Keumkang glass Wool is certified not only by K.S, but by various international testing institutes, such as Lloyd's, B.V., D.O.T., U.S.C.G., N.K., etc. As these institutes certify, Keumkang Glass Wool has superior quality and a good reputation throughout South- East Asia and the rest of the world.