1. The company sealed it. If the person in charge is required to sign, it is necessary to stamp and sign.
2. When signing a contract, the terms of the contract are not required to be written by the parties themselves, but they must be signed or sealed by themselves. The signatory shall be the party himself, or the legal representative or person in charge of the unit, or the person in charge or agent of an authorized department. For the latter, the more cautious method is that the signatory submits a written legal person authorization.