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About product and suppliers:
        Alibaba.com offers 5,373 auto air diffuser products. About 62% of these are humidifiers, 2% are air fresheners, and 1% are hvac systems & parts. 

A wide variety of auto air diffuser options are available to you, such as ce, cb. You can also choose from ultrasonic humidifier, warm mist humidifier, and cool-mist impeller humidifier. As well as from usb, tabletop / portable, and mini. And whether auto air diffuser is manual, or humidistat. 

There are 5,373 auto air diffuser suppliers, mainly located in Asia. The top supplying countries or regions are China, Taiwan, China, and Thailand, which supply 99%, 1%, and 1% of auto air diffuser respectively. 

Auto air diffuser products are most popular in North America, Western Europe, and Eastern Europe. 

You can ensure product safety by selecting from certified suppliers, including 977 with ISO9001, 332 with Other, and 58 with BSCI certification.