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地下室止水穿墻螺絲桿套PVC管做法有規(guī)范嗎？
發(fā)布者：xu0801  發(fā)布時(shí)間：2018-07-25 06:04:36
目前，國(guó)內(nèi)的食品包裝袋一般可分為單膜袋和復(fù)合薄膜包裝袋兩大類。其主要執(zhí)行標(biāo)準(zhǔn)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(wèi)生標(biāo)準(zhǔn)》、GB9688-1988《食品包裝用聚丙烯成型品衛(wèi)生標(biāo)準(zhǔn)》等。

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http://www.gtjgw.com/exhibit/201807/25/17029.html

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