7、echnologyprinciple andeconomic andlegal means, tosolvethepracticalproblemsinengineering constructionactivities in economyandtechnology, business andmanagement, only ineachstageof projectconstruction, the valuationbasedon scientificpricing methodand practical, r
8、easonableinvestment estimation, preliminarydesignandconstructiondrawingbudgetestimates, inordertoimproveinvestmentefficiency.ChinahasjoinedtheWTO, it has graduallytoimplemen