It will disappear. If the signer joins another trade union, when the signature list does not collect enough signatures, there will be one less signature on the trade union signature list. However, if the signatures of ten people have been collected, that is, the signers have joined other trade unions when the signature form has been completed but not handed in, the signatures will disappear without affecting the completion of the signature form. In other words, once the signature list is enough to collect 10 people, it is inevitable to establish a trade union.