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20965 semi trailers manufacturers products are offered for sale by suppliers on Alibaba.com, of which truck trailers accounts for 57%, other trailers accounts for 1%, and tractor trucks accounts for 1%. A wide variety of semi trailers manufacturers options are available to you, such as steel, carbon steel and iron.You can also choose from 12r22.5, 11.00r20 semi trailers manufacturers,As well as from 3, 3axl semi trailers manufacturers,and whether semi trailers manufacturers is mechanical suspension, or leaf spring suspension.