First of all, we really appreciate all of you visiting us at UNITED VISION CORP. We offer the most complete and technically advanced optical and ophthalmic lenses. We develop, manufacture and distribute various types of high-quality plastic ophthalmic lenses. CR-39 Middle-index, super Hi-index Lenses and other RX lenses. Most of our productsare manufactured in accordance with the requirements of the quality standards of ISO certificate and FDA / CE approvals and being exported to 20 or more principal countries in Asia, Europe, and Africa under the good reputation for our products&＃039; superiority . For more detailed information about our products . please contact our local office in your areaor visit the company&＃039; website at ***** Thank you.