Shanghai keter Polymer Co., Ltd. (hereinafter referred to as "Keter") was founded by Shanghai East China University of Science and Technology Investment Management Center in 1997, a high-tech enterprise as part of Shenzhen WOER Heat-Shrinkable Material Co., Ltd. Keter is registered in Shanghai Zhangjiang High-Tech Park and the registered capital is 23 million RMB with area of 8800 square meter, of which 4800 square meter are located as workshop. Keter is a high-tech enterprise specialized in research, development and production of functional materials and components. The company has solid technical strength and advanced product development ability, which is provided by the innovative group of more than 20 doctors and masters with above ten patents. The main products are KT series over-current protection polymer Thermistor (PPTC Thermistor), including TD, –B/U, C/CL,D/DL, SMD series. With advantage of high safety, auto self-restoration, high current resistance and small dimension, they can be widely applied in communication switches, distribution frames, battery sets, computers, ADSL facilities, micro-electrical machines, transformers and other electrical appliances and circuits, according to the different operating voltage (6V～600V) and hold current(40mA～14A). In recent years, Keter has got honors such as “Shanghai Invention Award”, “National Science and Technology Development Award”. Keter has passed ISO9001: 2000 Quality System Certification and ISO14000 Environmental System Certification of KEMA Company, Holland in 2000 and their products have successively acquired UL/C-UL Safely Certification, CQC Certification(also known as CCC Certification), SGS Certification and TUV Certification. Keter commit himself to set up humanity environmental of innovation, efficiency, equity and trust, pursue a way of working with democracy and open, follow the policy “to be top-ranking enterprise in the world, let employee satisfied, let client satisfied and let society satisfied.”. Keter will continuously develop and improve in the market competition by strict quality control.