Dab tsi yuav tsum tau them nyiaj mloog rau thaum yuav cov khoom siv sab hauv LED Tam sim no, sab hauv tsev LED cov ntxaij vab tshaus tau maj mam dhau los ua qhov tseem ceeb tshaj tawm, tshwj xeeb tshaj yog nyob rau thaj chaw muaj neeg coob xws li tsev txhab nyiaj, tsev so, khw muag khoom, tsev kho mob, thiab lwm yam, uas muaj ntau tus neeg. ..
Nyeem ntxiv