where to buy astelin Maintenance Repair Service (MRS) was formed in 1996 to provide a real time maintenance solution for the retail industry. Since conception MRS has grown into a one stop solution for all your repair and maintenance needs. We have fifteen divisions that specialize in respective areas of expertise; from cart maintenance to complete store renovations. Our business is rapidly growing, so if you don't see a specific service listed please give us a call! You'll discover we do have the expertise you need.