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Workers assemble the Boying T1400 Tandem Rotor Unmanned Helicopter at the factory of United Aircraft in Harbin, northeast China's Heilongjiang province, Oct. 30, 2025. [Photo/Xinhua]
China's producer price index (PPI), which measures costs for goods at the factory gate, went down 2.2 percent year on year in November, the National Bureau of Statistics said Wednesday.
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