Technical Parameters：

Uniform Temperature Zone Size:Φ (100-450)mm×(100-600)mm

Working Temperature：2100℃ 

Working Vacuity: 1×10-3pa  

Heater Form：tungsten wire net heater as main heating heater, upper and

bottom compensation heater as tungsten rod heater

（according to temperature zone size）

Charging and Discharging Method：automatically lifting at bottom
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