The bicycle frame is a work of art.

In order to make the bicycle frame lighter, stronger, its material from the earliest steel, and then to the aluminum alloy, and then to the composite materials (such as carbon fiber), scandium alloy, magnesium alloy, titanium alloy, has been constantly innovation. At the same time, designers are also improving the design of pipe fittings and structures to make them more comfortable and more beautiful lines, looks like works of art

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