Cov yeeb nkab hlau tsis muaj qhov txias feem ntau muaj txoj kab uas hla me, thiab cov yeeb nkab hlau tsis muaj qhov kub feem ntau muaj txoj kab uas hla loj. Qhov tseeb ntawm cov yeeb nkab hlau tsis muaj qhov txias yog siab dua li cov yeeb nkab hlau tsis muaj qhov kub, thiab tus nqi kuj siab dua li cov yeeb nkab hlau tsis muaj qhov kub.
Cov kav hlau tsis muaj qhov sib txuas yog muab faib ua cov kav hlau kub dov (extruded) thiab cov kav hlau txias rub (dov) seamless vim lawv cov txheej txheem tsim khoom sib txawv. Cov kav hlau txias rub (dov) yog muab faib ua cov kav hlau puag ncig thiab cov kav hlau zoo li tshwj xeeb.
Lub sijhawm tshaj tawm: Lub Ib Hlis-21-2022