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About product and suppliers:
        Alibaba.com offers 74 6v 1a power supply 4.0*1.7 mm barrel products. 

There are 1 6v 1a power supply 4.0*1.7 mm barrel suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 6v 1a power supply 4.0*1.7 mm barrel respectively. 

v 1a power supply 4.0*1.7 mm barrel products are most popular in Eastern Europe, Western Europe, and South America.