Ua ntej, dab tsi yog tus nqi muab los ntawm tus muag khoom tus nqi ntawm galvanized steel grating tuaj yeem raug suav nrog lub tuj, tus neeg muag khoom nyiam siv lub tuj ntawm tus nqi, ...
Dab tsi yog LEAsEN steel ntawv pawg? Xyoo 1902, tus kws tsim khoom German hu ua Larsen ua ntej ua ntej, thiab raug hu ua "Lensen ntawv pawg" tom qab nws lub npe. Tam sim no ...
Cov yeeb yaj kiab sib xyaw ua ke yog ua los ntawm ob peb daim ntawm corrugated daim hlau tsau nrog bolts, yooj yim yuav tsum tau nruab rau ntawm-site, daws qhov teeb meem ntawm Discitio ...