SHENZHEN ZK ELECTRIC TECHNOLOGY CO., LIMITED (Here called ZK) is a top manufacturer of MPPT solar pump inverter, frequeny inverter and AC drive in Shenzhen China.We were established in Shenzhen city in 2015, welcome your visit.We have 3 professional production lins, over 10 years experience R&D term, and ISO9001 Standard management system.We have lots of materials on warehouse. Sample can be sent within 3 days.Bulk order can be sent within 10 days.20/40ft container can be loaded within 20 days.All with 18 months warranty, online & onside technical support!Now our inverters are becoming more and more popular, welcome your inquiry.www.vfdsolar.com