Downlights yog ib qho khoom siv teeb pom kev zoo sab hauv tsev uas muab lub teeb ci siab thiab ua rau tag nrho chav ci ntsa iab. Thaum muas downlights, peb yuav tsum tau them sai sai rau tsis tsuas yog nws cov tsos, loj, thiab lwm yam, tab sis tseem ceeb tshaj, nws zoo. Yog li, yuav ua li cas kom paub qhov txawv qhov zoo ntawm downlights? Ntawm no yog som ...
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