... and the endurance of the bead. Qingdao AOI Tyre Co., Limited is a specialized company engaged in tyre designing, developing, ... --16PR 3550kg(single) / 3250kg(dual) --18PR Qingdao AOI Tyre Co., Limited is a specialized company engaged in tyre designing, developing, manufacturing ... and the endurance of the bead. Qingdao AOI Tyre Co., Limited is a specialized company engaged in tyre designing, developing, ...