If the original is missing, the copy is valid. If the original contract is lost and only the copy is available, the formation of the contract will not be affected and the contract is still established. However, if the other party does not accept the copy of the contract when a lawsuit is filed to the court due to a dispute arising from the performance of the contract, the lost party will not be able to provide the original of the contract, which will adversely affect its claims. According to Article 70 of the Civil Procedure Law, the original of documentary evidence shall be submitted. The original material evidence shall be submitted. If it is really difficult to submit the original or the original, copies, photographs, duplicates and extracts may be submitted. The documentary evidence in foreign languages must be accompanied by a Chinese translation.
 Legal basis: Article 70 of the Civil Procedure Law shall submit the original documents. The original material evidence shall be submitted. If it is really difficult to submit the original or the original, copies, photographs, duplicates and extracts may be submitted. The documentary evidence in foreign languages must be accompanied by a Chinese translation.