Kev kho deg JJD muaj kev paub ntev txog kev kho cov npoo av. Peb muab hmoov casting thiab kua pleev xim rau hauv peb lub rooj cob qhia. Tsis tas li, peb muaj cov khoom siv kho mob zoo heev hauv anodizing, plating thiab E-txheej.