lol, you think china is full of factories desperate to make you 5 handlebars.
Bicycle manufacturing for export isnt very big in china anyway, you were probably thinking of taiwan. China makes, electric bikes, kids/toy bikes and traditional bikes for home. But all of these would be in millions of units.
If you want a few handlbars made you are better of looking at a small fabricators in the UK.
For example, archie wilkinson (just outside brum) makes these very small run and sells em £18 each, anodised in nice colours.
Hence the 'just a thoght'