very categorically, the “necessary and essential conditions” are identified in relation to “anti-competitive links” and these are: (1) the existence of two separate goods or services that may be related to each other; (2) In order to significantly restrict free competition on the market for its product, the seller must have sufficient economic power in relation to the sneezing product (3) The binding agreement must concern a significant amount of trade, an agreement in which the seller links the sale of a product (the `binding` product) to the buyer`s consent to the purchase of a separate product (the `tied` product) from the seller. Alternatively, it is also considered a binding agreement if the seller concludes the sale of the sewing product with the buyer`s agreement not to buy the related product from another seller. See Eastman Kodak v. Image Technical Services, Inc., 504 U.S. 541 (1992). . . .