I am a inventor in London. My invention is a Batteryless Bicycle safely light which is not very difficult to manufacturing.I am looking for a manufacturer worldwide for low cost mass produce the new product.
But I contacted some manufacturers in Asia (such as: China or Hongkong). For some reasons they are first showing very interested in it, then afterward they all lose interesting to make the product for me.
I do not know why?
Is that I have to pay any money in front?
If someone know any good manufacturers in Asia, please introduce to me.