Aiming at the problem that current schemes mostly let the latter signer to verify the multiple signatures of the previous signer. and the message is signed and then passed to the next signer. leading to the efficiency problem of long overall signature time. A sequential aggregate signature scheme based on bilinear pairs was proposed. https://www.bekindtopets.com/save-now-Aqua-Pure-3MFF101-Full-Flow-Drinking-Water-System-Replacement-Cartridge-flash-choice/