所有(you)進(jin)出口包(bao)裝(zhuang)(zhuang)箱必須要有(you)真空(kong)(kong)包(bao)裝(zhuang)(zhuang)，其工(gong)藝特點為(wei)(wei)(wei)工(gong)件(jian)與木箱之(zhi)間增加(jia)一(yi)只(zhi)真空(kong)(kong)包(bao)裝(zhuang)(zhuang)套(tao)，通(tong)常(chang)為(wei)(wei)(wei)鋁泊紙，并加(jia)上幾層緩沖材(cai)料，真空(kong)(kong)包(bao)裝(zhuang)(zhuang)是(shi)將包(bao)裝(zhuang)(zhuang)袋內(nei)(nei)抽成低真空(kong)(kong)后，再(zai)行(xing)封口。經真空(kong)(kong)包(bao)裝(zhuang)(zhuang)后的產品可縮小體積；使包(bao)裝(zhuang)(zhuang)物品達到防(fang)潮、防(fang)霉、防(fang)污染、防(fang)氧化(hua)、防(fang)銹(xiu)的目次。目前國(guo)際(ji)運輸多為(wei)(wei)(wei)海運，一(yi)般在海上漂(piao)泊時間為(wei)(wei)(wei)10~50天。因各地濕(shi)度、溫度不同，同時各大洋(yang)內(nei)(nei)濕(shi)度較(jiao)大，工(gong)件(jian)極容(rong)易生銹(xiu)，故它是(shi)一(yi)種切實有(you)效，行(xing)之(zhi)可行(xing)的長(chang)途(tu)防(fang)生銹(xiu)措施(shi)。