The furnace unit is consisted of a hydrogen supply source, a high temperature pit furnace, a furnace pot, a slow-cooling furnace, and a quench tank.

采用该方案制作的氢气退火炉由气源部分、井式高温炉、炉罐、缓冷炉和急冷槽组成。

Medium temperature box adopts enclosed fire pot. The spiral heating component made by electric heated alloy wire coil all around of furnace pot. It has functions of evenly loss heat and long use life.

中温箱式采用封闭型炉膛，以电热合金丝为发热元件制成螺旋形后盘绕于炉膛四壁之中，散热时炉温均匀，延长了使用寿命。

The fining pot is for silver, and the furnace for gold: but the LORD trieth the hearts.

鼎为炼银，炉为炼金。 惟有耶和华熬炼人心。