BEIJING, April 21, 2023 /PRNewswire/ -- RLX Technology Inc. ("RLX Technology" or the "Company") (NYSE: RLX), a leading branded e-vapor company in China, today announced that it filed its annual report on Form 20-F for the fiscal year ended December 31, 2022 with the U.S. Securities and Exchange Commission (the "SEC") on April 21,...