About the MDNA

Used Machinery Headquarters

The Machinery Dealers National Association (MDNA) is a non-profit trade association whose members buy and sell used capital equipment. Established in 1941 to assure buyers of the integrity and reliability of used machinery dealers that are members of the association, the association represents nearly 500 member companies around the world. You can search for a particular member alphabetically, geographically, or by the specific types of machinery they sell. A complete listing of MDNA members may also be found in the MDNA Buyer's Guide.

The foundation of MDNA is its Code of Ethics. As a condition of membership, MDNA members agree to abide, unequivocally, by the terms of the Code, and renew this pledge annually. The Code is policed by the association's membership. Complaints brought from alleged Code violations are handled by MDNA's Ethics & Mediation Committee. Severe violations have resulted in expulsion from MDNA.


Why Buy from an MDNA Member?
Why Buy Used Equipment?
MDNA's Code of Ethics

MDNA members proudly display their emblem. This emblem identifies dealers who concur with MDNA's high standards of business practice. It is a symbol of integrity and reliability. It also recognizes dealers who have a wide range of technical experience and data to help customers improve their productivity.

The Code of Ethics underwriting this emblem provides that each MDNA member will:

  1. Carry out the spirit and letter of all agreements and contracts in which he engages.
  2. Respond to inquiries, advertise, and offer machinery and equipment as accurately as he is able as per:
    1. Name of Manufacturer
    2. Serial Number
    3. Condition
    4. Specifications
    5. Adherence to standard industry terms and definitions
  3. Honor every option given a prospective buyer.
  4. Advise prospective customers of conditions and circumstances of sale when offering customer-owned machinery and equipment through a brokerage arrangement.
  5. Accept within 30 days from shipment any machinery and equipment sold with return privilege, freight prepaid, for refund of the purchase price if proven mechanically unsatisfactory; or repair at dealer's option.