所有(you)(you)進出口(kou)包裝(zhuang)(zhuang)箱必(bi)須(xu)要有(you)(you)真空(kong)(kong)包裝(zhuang)(zhuang)，其工(gong)(gong)藝特點為(wei)工(gong)(gong)件(jian)與(yu)木箱之間增加一只真空(kong)(kong)包裝(zhuang)(zhuang)套，通(tong)常為(wei)鋁泊紙，并加上幾層緩沖材料(liao)，真空(kong)(kong)包裝(zhuang)(zhuang)是將包裝(zhuang)(zhuang)袋內(nei)抽成低真空(kong)(kong)后，再行(xing)封(feng)口(kou)。經真空(kong)(kong)包裝(zhuang)(zhuang)后的產(chan)品可縮小(xiao)體積；使(shi)包裝(zhuang)(zhuang)物品達到防(fang)潮(chao)、防(fang)霉、防(fang)污染、防(fang)氧(yang)化(hua)、防(fang)銹的目(mu)次。目(mu)前(qian)國際運輸(shu)多為(wei)海運，一般在(zai)海上漂泊時間為(wei)10~50天。因各地(di)濕度(du)、溫(wen)度(du)不同，同時各大洋內(nei)濕度(du)較(jiao)大，工(gong)(gong)件(jian)極容易生(sheng)(sheng)銹，故它是一種切實有(you)(you)效(xiao)，行(xing)之可行(xing)的長(chang)途防(fang)生(sheng)(sheng)銹措施。