集水井-1200x2000x3000
ACO channel 300x4000x60 H 110 Resin
ACO channel 150x800x60 V 75 Resin
ACO channel 500x1000x150 V 110 Vinyl
ACO channel 300x1000x60 V 110 Concrete
ACO channel 300x1500x60 V 110 Resin
ACO channel 300x2000x60 V 110 Concrete
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~