Topchase Metallurgical Refractories Co.,Ltd,Website:http://www.topzircon.com, bult in 1992, is a comprehensive company with the integration of R&D and factory. Main products we deal in are two categories: Tundish Refractories and Foundry Auxiliary Materials. Refractories include tundish metering nozzle, taphole clay, well block and zicronia insert. Foundry Auxiliary Materials have alloy cored wires, Metal alloys, nodulizer, slag remover and deoxidizer etc. More than 20 years’ experience in metallurgy and refractories enables us to develop and further optimize the most advanced and reliable...