Aichen, wotsogola wopanga komanso wotsogola mumsika wa phula, wavumbulutsa zaposachedwa kwambiri paukadaulo wopanga phula - The Aichen 8-Ton Asphalt Plant. Malo awa - a-a-aluso amakhazikitsa mulingo watsopano wakuchita bwino, mtundu, ndi e
Pali mitundu yambiri ya makina a njerwa pamsika, pakati pawo pali makina a njerwa otchedwa makina a konkriti. Koma kodi mukudziwa zozindikiritsa makina oyika njerwa? Kodi mukudziwa zomwe zilembo za nambala ya njerwa zimayimira?