Just out of curiosity, why do you specifically ask for suppliers that don't want a tax ID? They're free and trivially easy to get.
Most name brand musical instruments -- band instruments, electric guitars and related products etc. -- use distributors rather than direct wholesale. IN most cases a phone call to the manufacturer will get you in touch with the nearest distributor to you.
Thank you for your interest.
I'm new and do not know how to get the "tax id".
I'm from Spain and want to create an online store, using dropshipping system, but not as having a "tax id" international.