1.Q: Do you support a sample order? A: Yes, welcome to order sample, we have warehouses in the United States and Europe, some samples can be quickly shipped. 2.Q: Does the product have a built-in BMS? A: Yes, intelligent BMS including JBD/PACE/SmarTec built-in to ensure batteries are under smartly managed. 3.Q: Can your company accept customized order ? A: Of course, customization is our strength. 4.Q: Can the battery pack be compatible with the inverters on the market? A: Yes sir, our packs are compatible with more than 20 inverter brands on the market including Victron, Goodwe, Solis, Growatts,Voltronics, Deye and other famous brands. 5.Q: How is the Warranty? A: 5 years upto its usage. 6.Q: Do you have any certifications? A: CE, UN38.3 and MSDS, Pack UL1973 is under processing. 7.Q: How's the delivery way and time? A: Overseas warehouse(USA & Euro) will make quick delivery for small order. 30-50 days for customized order. Monthly production capacity 6x40HQ for standard models. 8.Q: Do you have real factory? A: Yes, our factory is in Huizhou. We welcome you to visit our factory.