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About product and suppliers:
        Alibaba.com offers 1,106 bus horn products. About 71% of these are speaker & horn, 1% are professional audio, video & lighting, and 1% are event & party supplies. 

A wide variety of bus horn options are available to you, such as tweeter, 2-way, and 4-way. You can also choose from iron, plastic, and aluminum. As well as from 12v, 24v. And whether bus horn is air horn, or electric horn. 

There are 1,106 bus horn suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of bus horn respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 406 with Other, 389 with ISO9001, and 38 with ISO/TS16949 certification.