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美圈家用中央空调风管式系统的年产量约600万台/年,占其家用空调产量的一半以上。美国家用中央空调风管式年产量知多少
The annual output of the American Central air-conditioning duct system is about 6 million units / year, accounting for more than half of its domestic air-conditioning output. US home central air-conditioning duct annual production know how much