Ib yam dab tsi txog kub stamping

Ib yam dab tsi txog kub stamping

Txoj hauv paus stamping kub: Tom qab muaj qhov kub thiab txias, xim cov ntawv ci ntsa iab txuas cov qauv thiab cov ntawv nyeem ntawm cov yas ntsa.

Cov zwj ceeb tsim nyog: kub; siab siab; xim ntawv ci.

Kub Stamping: Kev kub nyhiab heev yog qhov tseem ceeb tshaj plaws hauv kev lees paub qhov zoo ntawm kev thim nyiaj.