Shenzhen Sdk Electronics Co., Ltd （Shenzhen BST Technological Co., Ltd）was established in 2005，specializing in EPCOS electronic components. The company became EPCOS (EPCOS original Siemens) professional vendors in March 2006. The company sales EPCOS Surge Arresters, EPCOS Varistors, EPCOS Capacitors, EPCOS PTC Thermistors and so on.