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By certification 
If you are looking for customized and cheap nozzle brick made in China from a nozzle brick factory, Zibo Qunhui Refractory Co.,Ltd is always at your service.
Features:
1) high temperature durable.
2) good thermal shock resistance.
3) good wear resistance and corrosion resistance ability.
4) good thermal shock and thermal spalling resistance.
5) high mechanical strength.
6) high temperature and volume stability is good
