1. The picture you uploaded shows that the utility model has been authorized on 2011-11-30 (If the utility model is not authorized, it cannot be found online. An announcement means it has been authorized.) . ---You can also roughly confirm by querying the patent legal status on the right side of the home page of the State Intellectual Property Office.
2. The certificate should have been sent. Please ask the recipient ZY to check the receipt records from December last year to the present. If you really don’t receive it, go to the State Intellectual Property Office’s homepage and look for their hotline number to ask.
3. As for "Many patent transfer companies have sent me letters": Most of these letters are unreliable. Please keep your eyes open.