Vim li cas peb thiaj li yuav tsum tau nruab hnub ci chaw nres tsheb teeb?
Raws li ib qho ntawm cov chaw tseem ceeb tshaj plaws hauv peb lub tsev, cov chaw nres tsheb yuav tsum muaj teeb pom kev zoo rau kev nyab xeeb thiab yooj yim. Tab sis cov teeb pom kev zoo ib txwm muaj xws li fluorescent lossis incandescent teeb pom kev zoo tuaj yeem ua haujlwm tsis zoo, raug nqi thiab tsis zoo ib puag ncig. Tias yog vim li cas thiaj li muaj ntau tus tswv tsev tau tsiv mus rau kev txhim kho lub hnub ci lub tsheb teeb - lawv muab cov teeb pom kev zoo thiab txhim khu kev qha ...
Vim li cas peb thiaj li yuav tsum tau nruab hnub ci chaw nres tsheb teeb? Nyeem ntxiv »