REFRA is specialized in producing thermal zone of high temperature furnace. The max temperature in furnace can reach to 2500

℃. There are four structures: tungsten mesh,tungsten plate,tungsten strip and tungsten rod. The heat shield is processed 

with tungsten and molybdenum metal material. The temperature difference of uniform temperature zone is ±5°. This kind of 

furnace are widely used in sintering,annealing and brazing ceramic product industry.

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