
High Efficiency Round Glass Solar Panel 50W 40W 30W Solar Cell Panel. 25-Year Performance Warranty: Power output remains above 90% for the first 10 years with a full 25-year warranty coverage. High Efficiency Monocrystalline: Features 22.8% solar cell efficiency using premium monocrystalline silicon material. Customizable Power Output: Available in 10W, 20W, 30W, 40W, and 50W with customizable wattage options. Durable Tempered Glass: Constructed with 3.2mm low iron tempered glass for enhanced strength and longevity. OEM/ODM Services: Professional team offers full OEM/ODM support including custom size, shape, and design. ISO and CE Certified: Product meets international safety and quality standards with ISO and CE certifications. Fast Delivery Time: Standard delivery time is 15 days for mass production orders.