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About product and suppliers:
        Alibaba.com offers 11,874 auto transformer products. About 18% 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 single, three, and single phase. As well as from free samples, paid samples. 

There are 11,790 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 South Asia. 

You can ensure product safety by selecting from certified suppliers, including 7,002 with ISO9001, 4,142 with Other, and 546 with ISO14001 certification.