“硬　dish　消磁器　"　the　low　泄　of　“　shoot　the　telephone"　the　“　see　the　频　information　to　protect　the　machine"　the　“　add　the　密　card"　the　“　insulate　the　card"　“　cellular　phone　the　signal　shield　the　器　"　the　“　see　the　频　information　electromagnetism　interference　the　器　"　“　data　the　information　add　the　密　"　the　“　mail　add　the　密　"　“　circuit　password　machine"　“　the　calculator　to　add　the　密　"　the　“　document　clip　to　add　the　密　system"　the　“　computer　radiate　the　cancellation　器　"　“　soft　dish　消磁器　"　the　“　to　move　to　add　the　密硬　the　dish"　“　business　the　secret　protect　the　practical　guidebook"　how　“　is　protected　business　secret　VCD"　the　“　electromagnetism　shield　the　machine　cabinet"