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PATENTS & CERTIFICATES

Peb muaj ntau yam patents uas yog nyob rau theem ua nyob rau hauv Suav teb

Peb muaj ntau lub Hoobkas qib & khoom qib ntawv pov thawj,
thiab kev txhawb nqa muab cov ntawv pov thawj cais rau kev txiav txim tshwj xeeb.

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