Is Power Factor Correction required in China? I am designing a high power, >3kW power supply and need to know to what power factor it needs to meet.
Most of the Chinese mandatory national standards are based on similar IEC (European) standards. In this case, probably EN 61000-3-2.
A comparison of these standards (Chinese vs. foreign) related to your question can be found in this interesting Masters thesis "Comparison of Chinese and International Harmonic, Interharmonic and Flicker Standards by Yao Wang."
But you'd be best to purchase the actual standards if you want to have your product eventually tested for conformity.