News
O'YA is certified with Dun & Bradstreet D-U-N-S Registered™
O'YA has passed the authentication & Verification process of D-U-N-S® Registered™.
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News
ISO20121│O'YA INTEGRATED MARKETING SOLUTION won ISO20121
O'YA has successfully passed auditing and won ISO20121 Events Sustainable Management System Certification.
