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  • Pipe fitting manufacturing process flow

    Yeeb nkab haum manufacturing txheej txheem khiav

    1. Khoom siv 1.1.Kev xaiv cov ntaub ntawv yuav tsum ua raws li cov qauv tsim ntawm lub teb chaws cov yeeb nkab thiab cov qauv raw khoom xav tau los ntawm tus tswv.1.2.Tom qab nkag mus rau hauv lub Hoobkas, cov neeg soj ntsuam thawj zaug v ...
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