They are looking so much as the genuine parts. I think this store sells genuine parts. Thanks for the items.
Pieces are not new, but refurbished... In a 300 pieces lot I receive 220 pieces with broke, crooked, cutted, missing or soldered terminals... Seller send me pieces to exchange, but I believe the information they are refurbished should be mentioned on the announce... Beside it the IC´s works fine. The slew rate match with the datasheet specification (about 7V/us).