The observation window on the door is made of double-layer temperedglass, 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。
2
This Vacuum oven is with digital display, microcomputer control, double-layer tempered bullet-proof glassdoor, and inner made of stainless steel inner.
本真空烘箱数显、微电脑控制、双层钢化防弹玻璃门、不锈钢内胆。
3
The substitution of a common non-fire-insulation temperedglass with water film for the fireproof glass or overhead door has been proven workable.