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Vim li cas kev sim khiav yog qhov tseem ceeb.
Tom qab ua tiav ntawm peb 315HDPE Cov kab ntau lawm, kev sim khiav tau npaj los xyuas kom meej tias txhua qhov thiab tag nrho cov txheej txheem extrusion ua haujlwm zoo. Tom qab 1 teev ntawm kev sim ntau lawm, kev ua haujlwm zoo meej tau raug pov thawj thiab npaj rau kev xa khoom. Vim li cas kev sim khiav tseem ceeb Txhua lub tshuab ua los ntawm Langbo yuav tsum muaj ...Nyeem ntxiv
