Introduction of MWT Back Contact Solar Charging Panel Folding： MWT is the acronym for Metal Wrap Through, which means metal perforated winding in English. Is a newly developed back contact cell technology that uses laser drilling, back routing to eliminate busbars on the front of the cell, metal is printed into these vias/holes and fired into the cell so that it can be accessed from the emitter and the backside of the contact area (positive and negative terminals) to extract the resulting current, a technique currently only used in crystalline silicon solar cells.   Feature of MWT Back Contact Solar Charging Panel Folding： Technical definition: The technology of laser drilling and back wiring is adopted to eliminate the main grid line of the front electrode. The current collected by the fine grid line of the front electrode is led to the back side through the silver paste in the hole, and the positive and negative electrode points of the battery are distributed on the battery sheet. It can effectively reduce the shading of the front grid lines, improve the conversion efficiency, and at the same time reduce the consumption of silver paste and the loss of minority carrier recombination at the metal electrode-emitter interface. As shown below:   Advantages: Compared with the conventional H-type battery, the MWT battery gives a lot of flexibility in the design section, including the layout and number of laser openings, the front grid line and graphic design, and the distribution of the back electrode points, etc. The two most representative basic structures: a simpler imitation H-shaped layout proposed by FISE in Germany, and a star-shaped layout proposed by ECN in the Netherlands FAQ: Q: Which payment form you can accept? A: T/T, Western Union, PayPal etc. We accept any convenient and swift payment term.   Q: Which certificate do you have? A: CE, FDA and ISO13485.   Q: Do you have the test and audit service? A: Yes, we can assist to get the designated test report for product and the designated factory audit report.   Q: What's is your shipping service? A: We can provide services for vessel booking, goods consolidation, customs declaration, shipping documents preparation and delivery bulk at the shipping port.   Q: Can you provide the FBA shipping service? A: Yes, we have the good experience in providing the professional FBA service.   Q: What's your tem of the delivery? A: Our ordinary delivery term is FOB Xiamen. We also accept EXW, CFR, CIF, DDP, DDU etc. We’ll offer you the shipping charges and you can choose the one which is the most convenient and effective for you.