Using PERC Cells Structure Technology (Low Resistance Characteristics), Output Power Of 60pcs Monocrystalline Cells Reaches Max 450W (Highest Conversion Efficiency To 20.9%)  Item NO: 300W Mono Min order: 10 Cells Number: 60PCS(6*10) Original Region: China Lead Time: About 15 working days Warranty: 25 Years Number of Cells: 60pcs Efficiency: > 20.6% Certification: EST, UL, CE Material: Monocrystalline Silicon