1.Why choose XinDongke Solar? We established the business department and a warehouse which covers 6660 square meters in Fuyang, Zhejiang. Advanced technology, professional manufacture, and excellent quality. 100% A grade cells with ±3% power tolerance range. High module conversion efficiency, low module price Anti-reflective and high viscous EVA High light transmission Anti-reflective glass 10-12 years product warranty, 25 years limited power warranty. Strong productive ability and quick delivery. 2.What are your products lead time ? 10-15days fast delivery. 3.Do you have some cerfiticates ? Yes, we have ISO 9001, TUV nord for our Solar Glass, EVA film, Silicone sealant etc. 4.How can I get a sample for quality testing? We can provide some free small size samples for customers to make a testing. Sample shipping fees should be paid by customers. kindly notes. 5.What kind of solar glass can we choose? 1) Thickness available: 2.0/2.5/2.8/3.2/4.0/5.0mm solar glass for solar panels. 2) The glass used for BIPV / Greenhouse / Mirror etc. can be custom according to your request.Solar panel raw materials interconnect use 5*0.2mm PV bus bar ribbon 1.Interconnect Ribbon used to connect a single block of cells to form solar cell strings. 2.Bus Bar used to connect the battery slice group,leads the current. Mechanical Property: 1.Yield strength:≤70MPa 2.Elongation≥25% 3,250MPa ≥Tensile strength ≥135MPa 4,Side camber≤4mm/m 5,Soldering tin melting point: 180−230°c Core Copper of TU1 Off-Cu or TU0 Off-Cu: 1,Copper Purity ≥99.99%/ 99.97%, Oxygen≤30ppm 2,Resistivity:≤1.707×10‾8 Ωm Electric Resistivity of Ribbon: ≤2.2* 10‾8Ωm Plated Thickness: 15-25um per side Composition of Plated Material: 1)    Lead series products: A,Sn 60%, Pb 40% B,Sn 63%, Pb 37% 2)    Lead-free series products: A.Sn-Ag Series B.Sn-Ag-Cu Series C.Sn-Cu Series 3)    Lead-Silver series products: A.Sn 62%, Pb 36%, Ag 2% B. Sn 60%, Pb 39.5%, Ag 0.5%