Shenzhen ZK Electric Technology Co., Ltd. (here we called ZK) ZK focuses on R&D, Design, and Manufacture of Solar Pump Inverter, Frequency Inverter and other accessories, also provides the complete solar pumping systems and Industrial automation solutions. 10 years of experience and a complete after-sales system. We have 30-50 staffs, 30% of whom are in the R&D department, to develop and improve our products performance and quality, to be more competitive. Mainly SG320 SG600 SU100 series Solar Pump Inverter and Frequency Inverter/Variable Speed Drive sell well in Southeast Asia, India, the Middle East, all Africa, South America and Europe. OEM & ODM are avaliable. Kindly contact us for distributors and agent.