... control, easy to operate, safe and practical, the iron furnace basin, Fletcher dragon, easy cleaning glue mark than similar products ... preheat 5-8 minutes before use.This product of tempering furnace type glue processing power, adjust knob to 220 degrees, ... preheated melt glue grain, should be melting furnace temperature of molten plastic to 150-200 degrees, melting (yellow to 6 minutes. Preheat When ...