Frederick Conveyors and Conveying Equipment Mfrs 7618 Hayward Rd Carter Control Systems (CCS) provides specialized solutions to move mail, containers, parcels and packages into, through and out of mailing and shipping operations using materials handling, packaging equipment, and machine controls. Frederick MD Conveyors and Conveying Equipment Mfrs Carter Control Systems www.cartercontrols.com mail sorting Mail tray sorting powered roller mailtray sorting mail tray conveyor mailtray conveyor conveyor package conveyor 24-volt conveyor accumulating conveyor Tray labeling package labeling Mail Tray Sleever mailtray sleever mail mail sorting Mail tray sorting powered roller mailtray sorting mail tray conveyor mailtray conveyor conveyor package conveyor 24-volt conveyor accumulating conveyor Tray labeling package labeling Mail Tray Sleever mailtray sleever mail Business Reviews Carter Control Systems Testimonials