BEIJING (Reuters) - Profit growth at China’s industrial firms slowed for the fourth straight month in June, as high raw material prices weighed on factories’ margins, pointing to some weakness in the recovery of the world’s second-biggest economy. Industrial firms’ profits rose 20% year-on-year in June to 791.8 billion yuan ($122.27 billion), data from the National Bureau of Statistics showed on Tuesday, after a 36.4% increase in May. The Chinese economy has largely recovered from disruptions caused by the coronavirus pandemic, but it has faced new challenges in recent months such as higher raw material costs and global supply chain crunches. “The unevenness in the recovery of corporate profitability still exists, with private firms and small businesses facing a slow rebound,” said Zhu Hong, a senior statistician at the NBS, adding that this was due to persistently high commodity prices and disruptions in supply chains. In the first half of 2021, industrial firms’ profits grew a hefty 66.9% from a pandemic-induced slump in the same period a year earlier. Profits in January-June increased 45.5% from the same period in 2019, before the global pandemic started. Chinese policymakers have stepped up efforts to curb surging commodity prices that have squeezed manufacturers’ margins to prevent the price increases from being passed on to consumers. While China’s producer price inflation eased in June after the government crackdown on runaway commodity prices, the annual rate continued to hover at an uncomfortably high level. Some analysts expect the factory gate inflation to stay elevated in the second half of this year. China’s economy grew slightly more slowly than expected in the second quarter. Officials have warned that the recovery remains uneven. Liabilities at industrial firms were up 8.5% year-on-year at the end of June, versus the 8.2% growth seen at the end of May. The industrial profit data covers large firms with annual revenues of over 20 million yuan from their main operations. Reporting by Stella Qiu, Roxanne Liu and Gabriel Crossley; Editing by Ana Nicolaci da Costa Our Standards: The Thomson Reuters Trust Principles.