JULY 31 (Reuters) – Over 500 start-up companies congregated in Hong Kong on Friday (July 31) to attend RISE, the first conference in Asia organised by Web Summit, one of the largest tech summits in Europe. Organisers estimated the event attracted over 5,000 people from 72 countries, including 300 investors. One of the companies attending the summit is the world’s biggest drone maker, China-based DJI. DJI, whose best-selling Phantom 2 Vision+ drone retails for around $1,200 […]