ua_pro_bg
Peb lub lag luam tseem ceeb yog R & D, tsim, tsim, muag thiab kev pabcuam hauv cov khoom siv hluav taws xob ntse.Cov khoom tseem ceeb yog teev nyob rau hauv ntse dej conservancy ib puag ncig-tiv thaiv thiab hydraulic machinery, nrog rau cov ntse dej pov tseg neeg hlau, ntse dej tu neeg hlau, hydraulic hoisting khoom, rooj vag thiab tsis siv neeg tswj cov khoom.