KEEN-WITTED INDUSTRIAL CO., LTD. With advanced R&D technology and manufacturing procedure management, we enhance the stability and preservation period of the optical disc and further increase their data storage for recording. KEEN-WITTED INDUSTRIAL CO., LTD., the Department of the world's leading DVD manufacturer Infodisc. KEEN-WITTED INDUSTRIAL CO., LTD. possesses decades of production experience gained from the world's largest DVD manufacturer Infodisc. R&D: acquires access to ...