Niaj hnub no, nrog kev sib kis ntau zaus, cov tuam txhab lag luam loj feem ntau xaiv cov tshuab ua cov 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