产品描述RETORTS, CRUCIBLES, MUFFLERS, NOZZLES, PLUGS, SUPPORTS, CUPELS, TUBES, PIPES, SHEATHS, RODS AND OTHER REFRACTORY CERAMIC GOODS, CONTAINING, BY WEIGHT, >= 45% OF ALUMINA AND > 50% OF SILICA (EXCL. REFRACTORY BRICKS, BLOCKS, TILES AND SIMILAR REFRACTORY CERAMIC CONSTRUCTIONAL GOODS)[展开]
收藏