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矩形检查井
ACO channel 400x400x200 V 110 Resin
ACO channel 150x800x60 V 75 Vinyl
ACO channel 400x400x100 H 110 Tiles
ACO channel 500x1000x150 H 110 Concr.
ACO channel 300x4000x60 V 110 Tiles
请描述当前构件存在的具体质量问题,以便我们可以尽快帮您解决~