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2020.12.24
Lub tuam txhab dhau GB-T29490 kev txawj ntse tswj hwm cov ntaub ntawv pov thawj txhua xyoo tshuaj xyuas
Thaum Lub Kaum Ob Hlis 12, 2018, peb lub tuam txhab tau ua tiav kev soj ntsuam txhua xyoo ntawm GB / T29490 kev tswj hwm cov khoom ntiag tug cov ntaub ntawv pov thawj.
NTXIV- 2020/12/24
Daim ntawv thov qhov chaw zoo siab soundproof npog
Ib pawg ntawm cov tshiab-hom zoo-siab soundproof npog thiab ntau yam loj-flow Roots blowers tau ntse siv nyob rau hauv ib qho chaw tshuaj nyob rau hauv Karamay.