72ح اختبار درجة الحرارة المنخفضة -70 درجة مئوية
Conclusion：Under the ambient temperature of 36℃, this package can maintain its inner temperautre at minus 70℃ for more than 72 ساعات.
Conclusion：Under the ambient temperature of 36℃, this package can maintain its inner temperautre at minus 70℃ for more than 72 ساعات.