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About product and suppliers:
        Alibaba.com offers 1,554 four wheels bicycle products. About 45% of these are bicycle, 14% are ride on car, and 1% are bicycle wheel. 

A wide variety of four wheels bicycle options are available to you, such as tandem bike, kids' bike, and bmx. You can also choose from 20", 24", and 18". As well as from steel, aluminum alloy, and aluminum. And whether four wheels bicycle is yes, or no. 

There are 1,556 four wheels bicycle suppliers, mainly located in Asia. The top supplying countries are China (Mainland), United States, and Bulgaria, which supply 99%, 1%, and 1% of four wheels bicycle respectively. 

Four wheels bicycle products are most popular in South America, Mid East, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 157 with ISO9001, 104 with Other, and 11 with HACCP certification.