May 31, 2019
Siv tawv pob zeb ua pob zeb ua khoom (batching concrete) cog teeb tsa raug mob
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May 29, 2019
ib qhov project, ib lub tshuab, tus kheej loading pob zeb ua kev tov khoom pab txuag tus nqi maximizing.
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Dec 17, 2018
Qhob tov ua ke muab faib ua plaub yam: gravel pub, hmoov (maas, yoov tshauv, cog qoob loo, thiab lwm yam) pub.
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Dec 03, 2018
Cov ntaub ntawv tswj kev tswj kom txuag tau cov ntaub ntawv ntau lawm ntawm qhov chaw nres tsheb hauv qhov tseeb.
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Nov 26, 2018
Kev txhim kho ntawm tus tswv tsev muaj peev xwm xaiv tau raws li tus neeg siv yuav tsum tau ua ntawm hom thoob ntiaj teb paub txog cov khoom...
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Nov 05, 2018
nplawm qhov system rau cov khoom tseem ceeb txawv teb chaws ua ke ntau qhov sib txuam ntawm ob chav pw chav sib tov khoom.
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Oct 29, 2018
loj cov zis, siab efficiency: nruam du haujlwm, nruam tov qhov chaw nres tsheb nkaus xwb-tshuab zis siab.
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Oct 08, 2018
Sandstone system: nrog rau peb pub gravel thoob (raws li nyias txoj cai kuj yog ob los yog plaub), feem.
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Sep 24, 2018
Yam ntxwv 1) Tus tswv tsev ua haujlwm zoo: raw cov ntaub ntawv nyob rau hauv ib lub sijhawm ntev ntawm lub sijhawm sib npaug zos rau hauv lu...
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