Aichen, ib qho chaw tsim khoom lag luam thiab tsim kho hauv kev lag luam asphalt, tau nthuav dav nws qhov kev sib tsoo tshiab hauv kev siv tshuab lub ichen 8 - tuj splyphalt cog. Lub xeev no - ntawm - - Kos duab chaw teeb tsa tus qauv tshiab rau kev ua tau zoo, zoo, thiab e
Yuav ua li cas ua cov pob zeb ua tawg? Nws yog ib qho tseem ceeb kom nco ntsoov tias nws tsis zoo ib yam rau kev tsim cov vaj tse uas nws yuav tsum tau siv rau phab ntsa sab hauv thiab sab hauv partitions, rau
Qhob thaiv kev ua haujlwm sib luag hauv kev tsim kho lub luag haujlwm, ua haujlwm raws li cov qauv hauv tsev, phab ntsa, thiab cov pavement. Raws li qhov kev thov rau cov pob zeb ua pob zeb nce siab, yog li qhov kev xav tau kom txuag tau thiab ntau yam thaiv ua tshuab. Th