Blair Tech Coupons And Promo Codes -In 2012, BTG was chosen to become 1 of just 20 official Microsoft Authorized Refurbishers (MAR) in the country. This ultra exclusive partnership with Microsoft gives BTG the ability to offer fully supported and licensed software products including Windows Operating System and Microsoft Office. Only the largest and most disciplined refurbishers in the country are considered for MAR partnership. With Microsoft’s support, the business has continued to flourish.