The outer cover of aluminium alloy which we used, it looks top-grade, the more important thing is that it is of good performance to dispel the heat, can guarantee the temperature of the whole PANEL is balanced, thus make PANEL life-span increase by more than 3 years. By the way, 55 inches of TVs are PANEL very expensive, PANEL is not large in quantity, if can be with, advise you to buy TV of 52 inches.
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We used aluminum alloy shell, it looks high-end, it is important to heat dissipation, and to ensure that the temperature of the entire PANEL balanced, so that PANEL life expectancy has increased more than three years.
Incidentally, this 55-inch TV PANEL expensive, not many PANEL number and, if possible, I suggest you buy a 52-inch television.