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About product and suppliers:
        Alibaba.com offers 1,586 h4 connector products. About 20% of these are auto lighting system, 9% are connectors, and 9% are wiring harness. 

A wide variety of h4 connector options are available to you, such as automotive, automobile, and pcb. You can also choose from adapter, din, and bnc. As well as from male, female. And whether h4 connector is free samples, or paid samples. 

There are 1,584 h4 connector suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 98%, 1%, and 1% of h4 connector respectively. 

H4 connector products are most popular in Western Europe, Domestic Market, and Oceania. 

You can ensure product safety by selecting from certified suppliers, including 1,008 with ISO9001, 866 with Other, and 840 with ISO14001 certification.