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NF T54-086-1990 Plastics Unplasticized poly(vinylchloride) (PVC-U) for underground irrigation Specifications 《塑料制品 地下灌溉用未增塑聚氯乙烯 规范》.pdf

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NF T54-086-1990 Plastics Unplasticized poly(vinylchloride) (PVC-U) for underground irrigation Specifications 《塑料制品 地下灌溉用未增塑聚氯乙烯 规范》.pdf_第1页
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NF T54-086-1990 Plastics Unplasticized poly(vinylchloride) (PVC-U) for underground irrigation Specifications 《塑料制品 地下灌溉用未增塑聚氯乙烯 规范》.pdf_第3页
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