A992 KUB dov H Tshooj Hlau Beob
Kev tsim kho: Siv nyob rau hauv lub tsev siab nce, txuas hniav, thiab cov ntas muaj vim nws cov khoom muaj peev xwm siab. Cov Infrastructure: Railway Txuas hniav, kev sib kis cov yees, thiab cov platform ntug dej. Cov Machinery: Crane booms, khoom siv mining, thiab kev ua liajcural machinery.