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交通运输部：上周邮政快递累计揽支量约26.93亿件，环比降降18.89%

从制造工艺角度解析，漂浮型与非浮型铝银浆的分水岭在于表面包覆技术的差异。非浮型铝浆在研磨工序中通过油酸分子层实现铝片的定向排列，这种结构使其在漆膜干燥后稳定存在于中下层空间，赋予涂层低调的金属质感。相

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