Lub tshuab yog nruab nrog lub txhab nyiaj laum ntawm 9 ntsug + 6 kab rov tav +1 pom hniav, uas tuaj yeem ua haujlwm ntawm ntsug thiab kab rov tav drilling. Npaj rau kev ua haujlwm pem hauv ntej, paving, balustrades, qhov rooj thiab qhov rais, engravings, thiab lwm yam. Zoo haum rau cov khoom ntoo, PAL, MDF, yas, resins, composi ...
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