Peb qhia PEDJ cov cuab yeej tiv thaiv hluav taws, uas yog cov khoom lag luam tshiab tsim los ntawm peb lub tuam txhab. Nrog nws cov kev ua tau zoo hydraulic siab thiab cov qauv tshiab, cov khoom no yog cov tshuaj tiv thaiv hluav taws kub hloov pauv.