Plug-in transformer, power transformer, power adapter manufacturer. SENTRA-TECH Electronic Co. founded In 1990 is a professional supplier in the field of power supplies. SENTRA was a small producer for power transformer designed in linear and switching supplies. SENTRA gradually becomes a marketing agent for the associated products and mostly deals in power supplies and transformers. Also we would like to handle other products for customers besides these products. Power supplies we can provide is up to 70 watts, type in wall mount or desktop. Input plug will be depended on countries, and the terminal of output will match the appliances used. Safety approval for power supplies are mostly available. These power adapters/supplies are external devices, which can be applied with computers, telecommunication, digital cameras, battery chargers, scanners, and process control fields. Our production plants are located in both Taiwan and China. The space of plant in China is 1500 meter square and 380 employees. Our management department have been constantly improving our capacity and quality, and make delivery and quality become more efficient than competition. Power supplies for linear and switching design had been certified with marking like UL, C-UL, GS, CE, CB, SAA, T-MARK, NORTH EUROPE and so on. Our safety standard applied is UL 1950, UL 1310, EN 60950, EN61558 and Technology Equipment A11. We always meet up-date required standard and market. Alos our factory in China had been certified by BSI and obtained ISO 9002 Certificate already in 1995.