Qhov no yog ib rooj plaub ntawm vuam ntawm daim duab peb sab thiab pentagonal daim hlau ntawm pem hauv ntej ncej underline beam, vuam ntawm lub footplate thiab vuam ntawm pem hauv ntej phaj. Qhov chaw nres tsheb no tau txais welded siv ntau 5kg DUCO kev sib koom tes neeg hlau es tsis txhob ntawm tus txiv neej ...