I can tell, because the handwriting is a signature pen or a pen, or even a ballpoint pen.

But the copy is toner cartridge powder, and the effect is obviously different.

As long as the original contract exists, the signed copy of the contract is valid.

Due to the defects in the copy of the contract, it is impossible to independently exert the probative force of the original, and other evidential materials are needed for reference.

Legal basis:

Article 490 of the Civil Code

If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. 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.