No need. Shell Haozan Electronic Agreement is an agreement signed by electronic signature technology. According to the law, the agreement signed by electronic signature has the same legal effect as the traditional paper signature if it meets the relevant legal requirements. In practical application, electronic signature technology usually adopts digital certificate and electronic signature to ensure the identity of the signer and the authenticity and integrity of the signature process. Therefore, the Shell Haozan electronic agreement still needs to use the corresponding electronic signature technology to ensure the legal effect of the agreement without signature. When signing an agreement using electronic signature technology, the signer needs to ensure the security of his digital certificate and other information to avoid being stolen by electronic signature or other risks.