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主题 : UPVC-工业蝶阀
材质:UPVC/PPH/CPVC/PVDF 规格:2" -12" 标准:DIN/JIS/CNS/ANSI
材质:UPVC/PPH/CPVC/PVDF 胶圈:EPDM/VITON 阀杆:304/316 规格:2"-12" 标准:DIN/JIS/CNS/ANSI
材质:UPVC/PPH/CPVC/PVDF 胶圈:EPDM/VITON 阀杆:304/316 规格:2"-12" DIN/JIS/CNS/ANSI
材质:UPVC /CPVC/PPH/PVDF 阀杆材质:304/316 规格:2"-12" 标准:DIN/JIS/CNS/ANSI
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