Ping An Pratt & Whitney's electronic signature accurately and clearly expresses the wishes of the parties to the contract. The electronic signature must represent the true will of the signer, indicating that he agrees with all the terms and conditions of the contract. The parties to the contract confirm the contents of the contract by electronic signature, which has obvious identifiability and determines the identity of the signatory. Therefore, the electronic signature of Ping An Pratt & Whitney is legal.