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- Patent certificate of 36 pairs rod reduction furnace (ZL201220166252.8)- Polysilicon reduction furnace
- Patent certificate of 48 pairs rod reduction furnace (ZL201220166234.X)- Polysilicon reduction furnace
- 115.5 high pressure silo for simulation analysis
- 296.5 patent certificate for high voltage silo for simulation analysis
- 300.8 switch cover mechanism for high pressure bin
- 346.X switch cover control system for high voltage silo
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