If you want to find out whether it is ok to stamp the contract seal with the trademark power of attorney, you must first find out the following points: 1. To apply for notarization of legal person's power of attorney, the parties concerned shall submit the following documents and materials to the notary office: 1, legal person qualification certificate; 2, the legal representative qualification certificate and identity certificate; 3. Power of attorney that needs notarization (the notary office can also prepare the power of attorney on its behalf). Second, we should pay attention to the following issues when handling the notarization of the power of attorney of legal person: 1. The legal representative shall apply to the notary office in person and shall not entrust others to act as agents. 2. The power of attorney shall specify the agent's name, agency matters, authority, agency date and validity period, whether there is the power of entrustment, etc. And the power of attorney.