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DIN 德国标准
› DIN 55529-2005包装软包装材料封存密封缝强度的测定
beiousheshou
发表于 2016-5-13 11:15:27
密封性测试标准?
wangyixutao
发表于 2017-2-28 15:34:45
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DIN 55529-2005包装软包装材料封存密封缝强度的测定