GEMSTONE is a multinational group company dedicated to technical research and production of advanced materials. We have 4 manufacture bases in mainland of China and a wide variety of alumina products are developed such as microcrystal grinding medias(balls and linings), high purity alumina packings, ceramic comb items, etc.Our alumina products stand out in service because of high crush strength, high hardness, premium performance in wear resistance and erosion control.It is worth mentioning that years of marketing witness aggressive development of our TNALU alumina balls and lining bricks series in not only China but also overseas markets. The remarkable performance in energy saving convince ceramic factories of that TNALU series are the best solution for ball mill operation. In the meanwhile, our lining and facing increasingly enjoy popularity among power plant and non-mental industries for premium wear resistance which protect pipeline conveyer system from damage. Our advanced materials products are moving their way fast and successfully into many industries.We rely the confidence on our state-of-the-art development in alumina product. Equipment and technology of cutting edge such as cold isostatic press, high temperature tunnel kiln, roller kiln, automatic plant for lining bricks follow our pursuit of best solution provider for advanced materials application in Construction Ceramic, Non-mental mines, Refractories, Cements, Steel works, Petrochemicals, Paints, Papermakings, Power plants etc.