Nrog rau pab pawg kws tshaj lij, cov kws tshaj lij engineers, pab pawg tsim kho, pab pawg muag khoom thiab pab pawg muag khoom tom qab muag, nws tau tsim ib pab neeg zoo, hluas thiab lub siab tshiab. Nws yog ib qho kev lag luam ua ke nrog kev tsim kho tshuab, tsim, tsim thiab muag.

Txhawm rau ua kom cov khoom xa tawm mus rau txhua qhov chaw ntawm lub ntiaj teb kom zoo, peb cov khoom tau dhau los ntawm CE daim ntawv pov thawj ntawm cov khoom lag luam kev nyab xeeb thiab Ali daim ntawv pov thawj kev tshuaj xyuas.

Ua cov khoom lag luam zoo thiab muab cov kev pabcuam zoo tshaj plaws, txhawm rau kom tau txais kev ntseeg siab thiab kev txhawb nqa ntawm feem ntau ntawm cov neeg siv. Peb paub tseeb tias peb txoj kev koom tes yuav ua rau koj txoj kev npau suav ntawm kev cob qhia kev tsim khoom tsis muaj neeg tuaj yeem ua tiav.