Niaj hnub no, nrog kev sib kis ntau zaus, cov tuam txhab lag luam loj feem ntau xaiv cov tshuab yaj-tshuab ua tshuab los tsim cov ntaub yaj.Cov cuab yeej tseem ceeb ntawm nws cov tshuab thiab khoom siv suav nrog: tsis siv neeg pub khoom noj, ntsia hlau extruder, yaj metering twj tso kua mis, teb hydraulic xovxwm, ceev mesh lim devi ...
Nyeem ntxiv