6、onstructionand investmentcontrolistheessenceof theuseofscienceandtechnologyprinciple andeconomic andlegal means, tosolvethepracticalproblemsinengineering constructionactivities in economyandtechnology, business andmanagement, only ineachstageof projectconstruction, the valuationbasedon scientificpri
7、cing methodand practical, reasonableinvestment estimation, preliminarydesignandconstructiondrawingbudgetestimates, inordertoimproveinvestmentefficiency.ChinahasjoinedtheWTO, it has graduallytoimplemen