Bike-sharing is the year’s hottest tech trend in China. The two biggest startups in the space have pulled in more than $1 billion cumulatively from VCs this year alone, and at valuations that exceed $1 billion — yet their businesses, and the bikes themselves, are not well known in the U.S. and other parts of the world outside of China. During our recent TechCrunch China event… Read More on Tech Crunch