Sinotronics Holdings Limited is a Hong Kong-based investment holding company. The Company is engaged in the manufacturing and sale of printed circuit boards (PCBs), and flexible printed circuit boards (FPCBs), as well as providing printed circuit board assembly (PCBA) and surface mounting technology (SMT) processing services. Its products have a range of applications in items, such as mobile communication devices, consumer digital devices, automotive and medical devices. The Company operates in three segments: PCBs, which is engaged in the manufacture and sale of PCBs, PCBs assembling products, which is engaged in the manufacture and sale of PCBs assembling products, and SMT processing, which is engaged in the provision for service mount technology processing service. The Company's subsidiaries include Superford Holding Limited, Artic Hong Kong Limited, Dynamic Fortune Technology Limited, China Electronic Holdings Limited, Tempest Trading Limited and Winrise International Limited.