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About product and suppliers:
        Alibaba.com offers 11,947 auto transformer products. About 15% of these are transformers, 3% are voltage regulators/stabilizers, and 1% are toy robots. 

A wide variety of auto transformer options are available to you, such as power, electronic, and high frequency. You can also choose from three, single, and single phase. As well as from free samples, paid samples. 

There are 11,858 auto transformer suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 98%, 1%, and 1% of auto transformer respectively. 

Auto transformer products are most popular in Domestic Market, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 6,997 with ISO9001, 4,229 with Other, and 747 with ISO14001 certification.