BEIJING, April 24, 2024 (GLOBE NEWSWIRE) -- Niu Technologies ("NIU", or "the Company") (NASDAQ:NIU), the world's leading provider of smart urban mobility solutions, today filed its annual report on Form 20-F for the fiscal year ended December 31, 2023 with the U.S. Securities and Exchange Commission. The annual report on Form 20-F can be accessed on the Company's investor relations website at ir@niu.com. The Company will provide a hard copy of the Form 20-F containing the audited consolidated financial stat ...