所有(you)(you)進出口包裝(zhuang)箱必(bi)須要有(you)(you)真空(kong)(kong)包裝(zhuang)，其(qi)工(gong)藝(yi)特點(dian)為工(gong)件(jian)與木箱之間(jian)增加(jia)一(yi)(yi)只(zhi)真空(kong)(kong)包裝(zhuang)套，通常為鋁泊紙，并加(jia)上(shang)幾層緩沖材料，真空(kong)(kong)包裝(zhuang)是將(jiang)包裝(zhuang)袋(dai)內抽(chou)成低(di)真空(kong)(kong)后(hou)，再行(xing)封口。經真空(kong)(kong)包裝(zhuang)后(hou)的產品可縮小體積；使包裝(zhuang)物(wu)品達到防潮、防霉、防污染、防氧化、防銹(xiu)的目次。目前國(guo)際(ji)運輸多為海運，一(yi)(yi)般在海上(shang)漂(piao)泊時(shi)間(jian)為10~50天(tian)。因各(ge)(ge)地濕度(du)、溫度(du)不同(tong)，同(tong)時(shi)各(ge)(ge)大洋內濕度(du)較大，工(gong)件(jian)極容易生(sheng)(sheng)銹(xiu)，故(gu)它是一(yi)(yi)種(zhong)切實有(you)(you)效，行(xing)之可行(xing)的長途防生(sheng)(sheng)銹(xiu)措施。