[ Problem Point ]
We have no way to put in the electric furnace to high temperatures.
[ ⇒Kaizen Point ]
Baked by the cave heating method with the Halogen Line Heater.
Obtained unprecedented color.
Related page:
No.24 Detailed examination of the solar panel (photovoltaic module) 
No.1 Moisture control of paper-forming process 
No.8 Dryness of resin pellet 
No.12 Preheat of blow molding 
No.13 Heat hardening of resin material 
No.19 Molding preheating of rubber 
No.26 Dryness of moisture of fiber (cloth) 
No.45 Heat source for instrument for analysis