The exterior insulation plate and the upper observation cover adopt stainless steel, to improve corrosion resistance and extend service life.
外保温板和上观测盖采用不锈钢板制作，提高抗腐蚀能力，延长设备使用寿命。
The exterior insulation adopts stainless steel plate, to enhance the corrosion resistance, extend the service life and have beautiful appearance.
外保温采用不锈钢板，增强抗腐蚀的能力，延长使用寿命且外表美观。
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