1、外壳为热浸镀锌卷轧钢板ZF075，强度高，不生锈；
2、门体厚度分别为40mm，50mm；
3、门体为钢/聚氨酯/钢结构，绝缘性能好，隔热系数高：R=16.04 R=20.15；
4、底部的U型管状橡胶条及顶，侧部的密封条耐寒，封闭性好，并能适应轻微不平地面，隔绝风雨侵害；
5、所有金属坚固固件均为热镀锌钢板制成，强度高，不生锈；
6、油回火处理大扭力弹簧，使用周期100，000次以上；
7、玻璃窗口以钢化玻璃或有机玻璃制成，有良好的透光性；
8、先进的红外线保护装置和气感安全保护装置。
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