The observation window on the door is made of double-layer tempered glass, the material heated in the oven can be observed clearly, meanwhile, the thermal insulation is well.
箱门观察窗为双层钢化玻璃结构，能清晰观察箱内加热的物品，又有良好的隔热效果。
Of working cold trough: stainless steel cold trough, the double-layer vacuum glass observation window.
工作冷槽：不锈钢冷槽，双层真空玻璃观察窗。
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