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1. Lub kaw lus tswj kev txawj ntse

2. Lub cim tshiab tshaj plaws ntawm cov tshuab hluav taws xob ua haujlwm siab

3. Lub cim tshiab tshaj plaws ntawm ultra-ruaj khov zaus converter

4. Qhov ntau zaus hloov pauv ntau yog qhov tseem ceeb dua

5. Kev cuam tshuam me me rau kev pib ua lag luam

6. Suab nrov tsawg