People chat in a Luckin Coffee outlet in Beijing. Since reaching a high of $50 per share in January, the coffee chain has cratered more than 90% in Nasdaq trading. AFP
People chat in a Luckin Coffee outlet in Beijing. Since reaching a high of $50 per share in January, the coffee chain has cratered more than 90% in Nasdaq trading. AFP

US regulators look to tighten norms for Chinese listings