China’s macroeconomic problems emerged this year as the No. 2 concern among American companies with business in the country, coming in just behind problems arising from bilateral friction, according to a Washington-based trade association survey released on Friday. “Weak” domestic demand and “overcapacity” are constraining company profitability in the world’s second largest economy, the US-China Business Council said in a summary of its summer 2024 survey of companies, conducted in June and July.