To enhance the basement environment, the company purchased and installed 5 SP4-40.2 GK-Parans natural sunlight systems collector with sunlight luminaires, featuring a total of 400-core energy fiber optics. This setup delivers 250,000 lumens of visible light/3000 watts full-spectrum natural sunlight, covering basement area of approximately 1000 square meters and saving 20,000 kWh of lighting electricity annually.