Hlau hlau yog cov hlau uas feem ntau siv sib sib zog nqus- cov khoom siv. Lub tshuab kos duab hlau uas tsim cov hlau hlau yog hu ua lub tshuab kos duab hlau. Muaj ntau hom hlau kos duab tshuab. Los ntawm txoj kev tswj sab hauv thiab cov qauv siv tshuab ntawm lub tshuab nqus hlau, lub tshuab nqus hlau tuaj yeem muab faib ua ntau hom, xws li hom dej tank, hom rub, thiab ncaj- hom.
Txoj kev tshawb fawb thiab kev tsim kho ntawm kev ua haujlwm siab tsis siv neeg siab -ceev hlau xaim kos tshuab muaj qhov cuam tshuam zoo heev rau kev txhawb nqa kev nce qib ntawm cov cuab yeej ntse kev lag luam thiab kev txhim kho kev lag luam. Nws tsis tsuas yog txhim kho kev tsim khoom zoo thiab txo cov nqi zog, tab sis cov khoom siv kuj muaj cov yam ntxwv ntawm kev nyab xeeb siab, qib siab ntawm automation, ruaj khov thiab txhim khu kev qha, thiab txhim kho kev ua haujlwm ntawm kev lag luam.
