Yas ywj siab ua si tswv yim rau 4 xyoo

SPIRIT yog cov tswv yim qub ywj pheej ua si rau 4 xyoos lub Hoobkas hauv Suav teb.

Peb cov tswv yim ua si ywj pheej rau cov menyuam yaus 4 xyoos siv cov yas zoo thiab cov hlau galvanized.

Lub sijhawm lav ntawm cov tswv yim ua si ywj pheej rau 4 xyoo yog 6 xyoo.

Peb cov tswv yim ua si ywj pheej rau cov menyuam yaus 4 xyoos ua tau raws li CE cov qauv kev nyab xeeb.