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Light weight. The density of aluminum is 2.73g/cm3, which is only 1/3 of that of steel.

As long as possible to prolong the paint resistance to the aging under the action of sunlight ultraviolet rays, among which PVDF paint (fluorocarbon c

The 270° occluding process of the roof plate is stitched by automatic occluding machine clamping double-sided single-support fully automatic professio