Unioocean International Co., Ltd., which is headquartered in Hong Kong, is a professional company specializing in natural slate, sandstone, limestone, as well as marble and granite.
We have our own sandstone quarries in Shaanxi and Sichuan province. Our slate is characterized by its low calcium carbonate contents, it is acid rain resistant and non-fading. Our product has passed BS 680 and ASTM. With the good quality and management, we have become one of China's leading suppliers of slates to Europe, Asia and North America.