SHENZHEN, China, March 28, 2026 /PRNewswire/ -- MicroCloud Hologram Inc. (Nasdaq: HOLO) ("MicroCloud" or the "Company") today announced that it has filed its annual report on Form 20-F for the fiscal year ended December 31, 2025, with the U.S. Securities and Exchange Commission (the "SEC"). MicroCloud is dedicated to the research, development, and...