If the TOKEN wants to launch the pre-ICO, how to do it without EC-20 smart contract?
Like the tokens issued by the Waves and Stellar.
It has the same method but you need to create your own asset on the stellar or waves platform. It's so simple dude, if you didn't even know about this and you need to learn more about crypto. To do an ico without any knowledge is not a good idea because this will have a very strong relationship with legal aspect.