亚洲综合在线播放_久久视频免费在线_久久久黄色av_亚洲免费视频一区

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PLC企業資訊

纖維材料的拉伸性能測試

發布者：lfdsbw 發布時間：2018-07-14 03:28:18

目前，國內的食品包裝袋一般可分為單膜袋和復合薄膜包裝袋兩大類。其主要執行標準有：GB/T4456-1996《包裝用聚乙烯吹塑薄膜》、GB12025-1989《高密度聚乙烯吹塑薄膜》、QB/T2461-1999《包裝用降解聚乙烯薄膜》、GB9687-1988《食品包裝用聚乙烯成型品衛生標準》、GB9688-1988《食品包裝用聚丙烯成型品衛生標準》等。

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