... The more information of the 300w solar panels as below:Main products: solar cell, solar panel, solar power system etc.MOQ: 1pcs(sample ... product warranty,10years 90% and 20years 85% for solar panels, 1year for solar systemsOEM order: welcomedCertificate: CE,TUV, UL etc. ... or as your spec.Delivery term: about 30days by seaWidely used for electricity, home, industry, communication, navigation, irrigation, ...