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About product and suppliers:
        Alibaba.com offers 44,185 whistle products. About 15% of these are whistle, 1% are other police & military supplies, and 1% are first-aid devices. 

A wide variety of whistle options are available to you, such as free samples, paid samples. 

There are 43,546 whistle suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 97%, 1%, and 1% of whistle respectively. 

Whistle products are most popular in Western Europe, North America, and South America. 

You can ensure product safety by selecting from certified suppliers, including 5,040 with ISO9001, 4,047 with Other, and 849 with ISO14001 certification.