签字后立即生效 meaning in Chinese

become effective immediately upon signature

The agreement shall enter into force upon signature .
协定签字后立即生效。
The agreement shall enter into force upon signature
协议于签字后立即生效。
This contract will be effective after being signed by both parties
本合同一经双方签字后立即生效。
The contract shall become effective as soon as it signed by both parties
本全同经双方签字后立即生效。
In case the agreement cannot be reached , any party may summit the dispute to the court that has the jurisdiction over the matter
本合同一经双方签字后立即生效；未经双方同意，不得任意终止，如有未尽事宜，甲、乙双方可另行协商。