Legal analysis: non-signature depends on whether the signer has legal or agreed authorization.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 492 The place where the acceptance takes effect is the place where the contract is established.

Where a contract is concluded in the form of a data message, the recipient's principal place of business is the place where the contract is established; If there is no main place of business, the domicile shall be the place where the contract is established. Unless otherwise agreed by the parties, such agreement shall prevail.

Article 493 Where a contract is concluded by the parties in the form of a contract, the place where the contract is finally signed, sealed or fingerprinted is the place where the contract is established, unless otherwise agreed by the parties.