(Bloomberg) -- A surprise tax change in Brazil, the world’s largest soybean exporter, is prompting Chinese buyers to snatch up US supplies.Most Read from BloombergHunter Biden Convicted of Gun Charges by Jury in DelawareApple Hits Record After Introducing ‘AI for the Rest of Us’Dozens of CVS Generic Drug Recalls Expose Link to Tainted FactoriesPimco Warns of More Regional Bank Failures on Property PainStocks Rise as Solid Treasury Sale Spurs CPI Bets: Markets WrapImporters in China, the top comm