Txawm tias loj npaum li txoj kev tsheb ciav hlau ceev ceev, dav hlau, neeg hlau, me npaum li xov tooj ntawm tes, koob yees duab, khoos phis tawj, khoom siv kho mob, ntsia hlau yog qhov tseem ceeb. Ntxiv rau cov khoom no xav tau ntsia hlau, txawm tias qee tus neeg mob xav tau ntsia hlau tshwj xeeb cog rau hauv lub cev rau kev kho mob ntawm qee yam mob. Cov khoom siv uas sawv cev los ntawm ntsia hlau tsis yog tsuas yog cov khoom me me uas tib neeg ncav cuag tau xwb, lawv kuj tau piav qhia tias yog "cov cuab yeej zoo tshaj plaws rau xyoo pua thib ob txij li tib neeg lub sijhawm."

Ua ib qho cuab yeej tseem ceeb, yog tias muaj teeb meem nrog kev muab cov khoom siv fasteners, nws yuav muaj kev cuam tshuam loj heev rau cov lag luam downstream. Tam sim no, qhov xwm txheej sib kis tseem nyob rau theem daws teeb meem, thiab qhov kev thov rau ntau hom khoom siv uas sawv cev los ntawm cov khoom siv kho mob thiab cov khoom siv ntsig txog lub ntsej muag yog qhov loj heev. Piv txwv li, ib lub tuam txhab hauv Ningbo tau txais ib qho kev txiav txim rau lub tshuab ziab khaub ncaws rotary uas tau hloov kho los ntawm lub chaw tsim khoom siv raw lub ntsej muag rau lub chaw ua haujlwm ua cov khoom siv hluav taws xob tsis-woven hauv Dalian. Cov ntsia hlau thiab lwm yam khoom siv fasteners.