HANS ENERGY (00554.HK) +0.002 (+0.885%) 's Citybus launched a new travel brand, “HK City Sightseeing”, for which Citybus invested over $30 million to expand its open-top bus fleet and upgrade its equipment, and released a new “Citybus+” sightseeing ticket and a multifunctional mobile app designed specifically for travelers, thereby facilitating tourists' travel experience in Hong Kong.(HK stocks quote is delayed for at least 15 mins.)