Titanium tooj liab composite daim hlau qhia tau zoo heev nyob rau hauv high-end industrial teb
titanium tooj liab composite phaj yog cov khoom sib xyaw ua los ntawm titanium thiab tooj liab daim hlau los ntawm kev sib tsoo tawg lossis lwm cov cuab yeej sib xyaw ua ke..
