All contracts are in duplicate or more, and some even require notaries to hold one copy. If several copies are not specified, copies with the same effect cannot be signed. If I don't give you a copy, I will sue for it back.

The advantage of signing an anchor is that the platform will provide you with a fixed salary, and clarify the commission standard and income distribution. If you don't sign the contract, you may only get the bonus share, but you won't get the promotion resources of the platform.