Ɗaya shine cewa folds farantin karfe ya zama madaidaiciya.Yawancin lokaci, manyan kamfanoni suna amfani da injin Laser na CNC cikakke ta atomatik don ninka gefuna.Rufewa suna kallon ido kai tsaye, akwai ƴan yaƙe-yaƙe da rashin daidaituwa, kuma taɓawa tana da santsi da santsi.

Na biyu shi ne buɗewa, musamman maɗaurin buɗe ido a cikin mahallin majalisar, wanda dole ne ya zama daidai 100%.Idan buɗewar dunƙule a haɗin ginin majalisar ba daidai ba ne, zai shafi tasirin taro na ƙarshe.

Na uku shine wurin walda.Gabaɗaya, majalisar ministocin an wargaza gaba ɗaya kuma an haɗa su, ba a buƙatar walda, kuma babu haɗin gwiwa na solder.Wani batu kuma shi ne mahaɗar tebur, kwandon wanki, da gefen faifan.Ga samfuran da ke da babban aikin fasaha, mahaɗar yawanci lebur ne da santsi, kuma babu alamar walda da za a iya gani a ido tsirara.