Where can we use our HOI Vouchers? All HOI Vouchers can be used in our HOI Online Store as well as in our Retail Branches. You can get more information in our HOI Website under the SERVICES section (VOUCHERS). By hoiadmin|2021-01-21T16:34:10+08:00January 21, 2021|Promotions & Marketing Events|Comments Off on Where can we use our HOI Vouchers? Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkXingEmail About the Author: hoiadmin