IETM　system　is　a　complex　product　information　management　system　based　on　JSP　and　MySQL.　It　contains　three　subsystems:　product　management　system,　material　management　system　and　IETM　making　system.　This　paper　first　introduces　the　IETM　system,　then　focuses　on　the　key　techniques　involved　in　the　management　process　including　product　information　management,　the　association　between　a　product　and　its　sub-products,　the　product　tree　caused　by　a　damaged　product,　the　product　tree　used　to　find　the　cause　of　failure,　the　performance　table　management,　the　conversion　technology　from　product　information　data　to　a　S10000D　document,　the　conversion　technology　from　S1000D　documents　to　a　Word　document　and　the　word　name　repetitive　judgment.　©　(2013)　Trans　Tech　Publications,　Switzerland.