BEIJING: Growth in China's vast manufacturing sector is expected to have dipped, but only marginally this month, easing concerns of a slowdown in the world's second-biggest economy as fears of a trade war with the US ebbed. The official manufacturing Purchasing Managers' Index (PMI) is seen slipping to 51.3 from 51.4 in April, according to the median forecast of 30 economists in a Reuters poll. The 50-point mark divides expansion from contraction on a monthly basis. That would mark the 22 straight month of expansion for China's manufacturing sector, and reinforce views that the economy will slow only modestly this year, good news for policymakers as they try to navigate debt risks and rocky trade relations with Washington.