Shanghai Semiwill Electronics was established in April 2004, as a professional circuit protection company, Semiwill focuses on circuit protection to make electronics equipments safe and reliable, by presenting one-stop service including not only broad over current and over voltage product portfolio, but also total design solutions, free testing and technical consulting. Semiwill&＃039;s dedication to excellence ensures continuous improvement of services to satisfy customer requirements and add value. Semiwill Electronics currently presents high quality Ceramic Gas Discharge Tubes (GDTs) , Thyristor and TVS Diode, a technical group with solid technical background for more than 15 years experience in the Overvoltage protection field. Experts are members of National Standards Writing Committee and very familiar with industry standards such as ITU-T K.12, GB9043, REA PE-80 and YD/T694. Semiwill also has a wide cooperation with Universities and institutes, and this makes Semiwill know clearly about worldwide market and technical trend. Semiwill manufactures whole series of GDTs, Thyristors and TVS Diodes. Semiwill products are designed and manufactured per as ITU-T K.12 and National standard GB9043, REA-80, YD/T694, Semiwill has passed ISO9000 and SGS certificates, also passed UL certificate. Semiwill has a production capability of manufacturing 20M(million) pieces annually, including 13M pieces of two-pole and 7M pieces of 3-pole GDTs. Semiwill is committed to providing high quality products and excellent technical services to our customers, up till now, our short lead time and quick responding have satisfied many world famous companies , which are located in Europe, America, Japan and Southeast Asia, etc. Our Vision: We make electrical equipments safer Our Mission: Become a famous international circuit protection supplier Our Values: Proactive, Integrity and pragmatism, Teamwork and innovation, excellence