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.Note: This Junction box is with 2*90cm cables and one set of MC4 connectorType:102(TUV) Power for PV mould 180-300w Electrical Features: Rated Voltage:1000VDC Contact Resistance:≤0.5mΩ Protection Class:Ⅱ Mechanical Features Temperature Range:-40°C to +85°C Wire Size Range:4mm2, 6mm2 Protection Degree:IP67, Closed Material Features Insulation Material:PPO/PA, Black Contact Material:Copper, Tin plated Flame Class:UL94-V0