MC4 Connector Free Sample Our History The company's predecessor was an electrical company that provided OEMs for foreign trade companies and foreign customers. It was established in 2008 and was renamed Yueqing Mingrui Electric Co., Ltd. in 2016. It independently owns the MEANRAY trademark. Our Product DC Circuit Breaker, Surge Protector Device, DC MCCB, Fuse, Isolator switch, PV Combiner box,...