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About product and suppliers:
        Alibaba.com offers 1,122 bus horn products. About 75% of these are speaker & horn, 1% are event & party supplies. 

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

There are 1,122 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 413 with Other, 400 with ISO9001, and 39 with ISO/TS16949 certification.