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About product and suppliers:
        Alibaba.com offers 10,741 ceiling diffuser products. About 37% of these are hvac systems & parts, 2% are humidifiers, and 1% are air fresheners. 

A wide variety of ceiling diffuser options are available to you, such as ventilation, hvac systems, and air conditioning. You can also choose from free samples, paid samples. 

There are 10,873 ceiling diffuser suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Turkey, which supply 98%, 1%, and 1% of ceiling diffuser respectively. 

Ceiling diffuser products are most popular in North America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 3,423 with ISO9001, 1,134 with Other, and 204 with ISO14001 certification.