It depends. Generally speaking, the contract will be written down and take effect after being signed or sealed by all parties. If one party fails to sign or print, and one party fails to approve the contract in other forms, the contract shall be deemed to be invalid. If the name of one party is printed on the contract, and one party does not sign it, but presses the handprint, the contract is established. If the contract does not violate the validity provisions of laws and regulations, it will take effect. Legal basis:

Article 144 of the Civil Code A civil juristic act carried out by a person without capacity for civil conduct is invalid.

Article 146 A civil juristic act in which the intention expressed by the actor and the counterpart is untrue is invalid.

The validity of a concealed civil juristic act with false intention shall be handled in accordance with relevant laws and regulations.

Article 153 The validity of a civil juristic act that violates mandatory provisions, public order and good customs. A civil juristic act that violates the mandatory provisions of laws and administrative regulations is invalid. However, unless mandatory provisions do not invalidate civil legal acts.

A civil legal act that violates public order and good customs is invalid.

Article 154 A civil legal act in which the actor colludes with the counterpart in bad faith and damages the legitimate rights and interests of others is invalid.