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About product and suppliers:
        Alibaba.com offers 1,676 bus horn products. About 61% of these are speaker & horn, 1% are event & party supplies. 

A wide variety of bus horn options are available to you, such as iron, aluminum, and abs. You can also choose from 2-way, tweeter, and 3-way. As well as from 12v, 24v. And whether bus horn is air horn, electric horn, or speaker. 

There are 1,594 bus horn suppliers, mainly located in Asia. The top supplying countries or regions are China, Pakistan, and India, which supply 82%, 16%, and 1% of bus horn respectively. 

Bus horn products are most popular in North America, Northern Europe, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 227 with Other, 174 with ISO9001, and 44 with OHSAS18001 certification.