Item will be purchase from OEM or its authorized dealer or the firm having the past performance of similar category of items. Firm should fulfill the any one of the following eligibility criteria to qualify the EC of tender. 1-. In case the bidder is OEM it must attach self-declaration or any other relevant document regarding to be the manufacturer of the offered item, failing which their offer will be rejected without any back reference. 2- If firm is authorized dealer, Firm must submit authorization certificate of OEM. The authorization issued from OEM must be valid on or after the date of tender opening. 3-If firm is past supplier of similar category item, firm should submit proven performance of supply (Not older than 1 April 2021) in Railway for the same or allied item. The allied items (to be decided by the purchasing authority) are those items which can be produced by same line of machinery and plant and adequate quality control arrangement. NOTE-1- It is mandatory to mention the particular quoted MAKE And Model with catalog name in the relevant column by the bidder with its e-offer. NOTE-2- Date of Validity of authorization certificate should be clearly mentioned in the certificate otherwise certificate will not be considered valid.