( CNN ) -- They have two wheels , can weigh less than a kilo and more than 6 million of them are made each year . They 're Giant Bicylces -- the work of a Taiwan based company which has been making bikes since 1972 , and now has over 12,000 retail partners worldwide . The secret to its success ? The process is everything . Tony Lo , CEO of Giant Global Group , is an avid cyclist himself and commutes 35 kilometers on his Giant Propel Advanced SL , which he describes as the most aerodynamic road bike in the world . `` Whenever I get on a bicycle I always feel very free , '' he says . `` The bike is an arrow , cutting through the wind . Everything disappears except you and the road in front of you . '' Giant 's bikes are made from millions of carbon fibers , each thinner than a human hair , cut by machines and sewn together . `` You want it very light , you want it very strong . But you also want the strength or stiffness only at where you want it , '' he says . `` Metal you can shape , but when you make the carbon fiber you can decide where each piece goes . You want the pedal to be very strong -- we call that the power core -- but in the seat you want it to be a bit soft , so it does n't feel so hard , '' says Lo . The bonded carbon fibers are cut into sheets that become the bike frames , and just like fresh bread , the frames are then baked in an oven before being rigorously tested . `` The most important thing we learn is that the bicycle can always become better , '' adds Lo . Watch the video above to learn how to build a Giant bike . Are 'immortal ' jellyfish key to eternal life ? Why are 'mousetronauts ' headed to space station ? Gone in 12 seconds : NASCAR crew 's super-fast pit stops .
Giant makes over 6 million bikes every year from carbon fibers . The ultra-lightweight frames are make from carbon fibers . The bikes weigh less than a kilo and are very aerodynamic .