Shanghai Keter Polymer Material Co., Ltd. was founded in 1997 and is specializing in the research, development and production of functional materials and components. Our company boasts advanced technology for producing PPTC over-current protection elements and is one of the biggest PPTC suppliers in China. Keter has passed the certification of ISO9001 International Quality Management System and our products have successively acquired UL, CCC and TUV certifications. All our products have passed the test of SGS and can be proved to meet the demands of ROHS. Keter's products are widely applied in communication switches, distribution frames, battery sets, computers, ADSL facilities, micro-electrical machines, transformers and other electrical appliances and circuits. We are now providing our products and services for about 1,000 customers across the world. If you are interested in any of our products, please do not hesitate to contact us for more information.