156mm Monocrystalline solar cells(4BB)Material: Mono crystalline siliconSize: 156mm*156mm (6 inch)Manufacture: Taiwan and Chinese solar cells brand. Efficiency rate: 19.4-20.4%Pmpp(W): 4.6-4.8Brand: NSP,  Motech,  Gintech,  Solarworld,  JA solar, Trian, Hanwha etc.Packaging information:100pcs  for one box. 10 box in one cartonMore information, please check the datasheet from download.Service:Pre sale:1.Our sales representative and engineer work together to answer your questions and offer solution for free2.We choose the best product for you to make sure it worth its real value3.Work with you to analyze market for you. Offer you the newest market change information.4. We offer you any new free samples when we have anything new to help you again more market share. After sale:We provide 10 years Warranty for the product, 12 years warranty for 90% power production ,25 years warranty for 80% power production.FAQ1. Q: Are you a factory or trading company?A: We are a solar panel manufacture and trading on solar cells.2. Q: Where is your factory located? How can I visit there?A: Our factory is located in Shenzhen, China. You are warmly welcomed to visit us!3. Q: How can I get some samples?A: The sample policy: we offer you sample, and after your bulk order we would return you. Also we offer free sample to our regular customer.