The strongest part of the claim is directly supported by the official source, "Industrial Producer Price Indexes in March 2026," which states China's PPI rose 0.5% year over year and 1.0% month over month in March 2026. Reuters independently matches the 0.5% year-over-year figure and notes it exceeded expectations. The 'strongest since August 2022' phrasing is not explicitly stated in the NBS page fetched, but corroboration attempts found secondary evidence indicating the 1.0% month-over-month rise was the strongest monthly gain since 2022. Because the official source confirms the exact headline figures and no contradictory evidence was found, the statement is likely true.