护士奶头又白又大又好摸视频_特级毛片a级毛片免费看r_狠狠躁夜夜躁人人爽天天不_亚洲特黄a级毛片在线播放_欧美a级黄色_顶级欧美色妇XXXXX

Yetuo DB-3WJ far-infrared microcrystalline electric heating plate

model: DB-3WJ

Product Overview:

This product is suitable for chemical analysis, physical measurement, heat treatment, baking, drying, and other temperature experiments in laboratories of industrial and mining enterprises, medical and health, environmental protection, biochemistry, scientific research and other units.

Product Features of Yetuo DB-3WJ Far Infrared Microcrystalline Electric Heating Plate

The shell is made of high-quality cold-rolled steel plate through sheet metal manufacturing, and the surface is treated with spray coating technology

The surface is made of imported microcrystalline glass panels, greatly improving the anti-corrosion function and preventing direct baking with open flames

● It has the characteristics of no open flame, no dust, fast heating, high temperature uniformity, and safety and reliability

matters needing attention:

The ambient temperature should be between 2-40 ° C, and the electric heating plate can work normally

Relative humidity not exceeding 85%

There are no strong vibrations, flammable or explosive materials, or corrosive gases around

The power supply voltage must match and be stable with the voltage required by the product

This instrument must be effectively grounded

During the first heating process, it is normal for there to be smoke and odor inside the electric heating plate, which is caused by the insulation material inside the electric heating plate at high temperatures. It will disappear after a few uses

It is normal for the surface of stainless steel material to have yellowing marks, which are caused by high-temperature debugging during factory production