Legal analysis: the copy of the contract also reflects the agreement of the parties. According to the conditions of the establishment and effectiveness of the contract, if the copy is consistent with the original, it also has certain legal effect, but the probative force is lower than the original. However, if the two parties to the contract re-sign the copy and indicate that "the copy has the same legal effect as the original after being signed by both parties", the copy can enjoy the same legal effect as the original.

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

Article 490 Where the parties conclude a contract in the form of a contract, the contract is formed when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.

Article 502 A lawfully formed contract shall become effective upon its formation, unless otherwise provided by law or agreed by the parties.