China’s factory activity contracted for the fourth straight month in June but showed some signs of stabilizing, according to a preliminary private survey, suggesting more stimulus measures may be needed to support the world’s second-largest economy. The HSBC/Markit Flash China Manufacturing Purchasing Managers’ Index (PMI) edged up to 49.6, a three-month high, from 49.2 in May, but remained below the 50 mark which separates contraction from expansion.