所有(you)(you)進(jin)出口(kou)包(bao)裝(zhuang)箱必須(xu)要(yao)有(you)(you)真空(kong)(kong)包(bao)裝(zhuang)，其工(gong)藝特點為(wei)(wei)(wei)工(gong)件(jian)與木箱之間(jian)增加一(yi)只(zhi)真空(kong)(kong)包(bao)裝(zhuang)套，通常為(wei)(wei)(wei)鋁泊(bo)紙(zhi)，并加上幾(ji)層緩沖材料，真空(kong)(kong)包(bao)裝(zhuang)是將包(bao)裝(zhuang)袋內(nei)抽成低真空(kong)(kong)后，再(zai)行封口(kou)。經真空(kong)(kong)包(bao)裝(zhuang)后的(de)(de)產品可縮小體積；使包(bao)裝(zhuang)物品達到(dao)防(fang)潮、防(fang)霉(mei)、防(fang)污(wu)染、防(fang)氧(yang)化(hua)、防(fang)銹(xiu)的(de)(de)目(mu)次。目(mu)前(qian)國際運輸多為(wei)(wei)(wei)海(hai)運，一(yi)般在海(hai)上漂泊(bo)時(shi)間(jian)為(wei)(wei)(wei)10~50天(tian)。因(yin)各地濕度(du)、溫(wen)度(du)不同(tong)，同(tong)時(shi)各大洋內(nei)濕度(du)較大，工(gong)件(jian)極容易生銹(xiu)，故它是一(yi)種切(qie)實有(you)(you)效，行之可行的(de)(de)長途防(fang)生銹(xiu)措施。