Double Hung Electronics Co., Ltd. was established in 1994, is a research, development, production and sales of high-tech private enterprises. The main products are special high power and stable DC power supplies, variable frequency power supply and electronic components for identification tests, routine tests and aging dedicated power supply and test instruments. In the same industry to pass ISO9001 international quality system certification. WWL full range of DC power has been detected by SGS, an internationally renowned rigorous testing, access to EU CE certification, is the DC power supply market, one of the major suppliers and has successfully entered the European markets. 


 Double-hung with strong development and design capabilities, in the shortest period of time to design and manufacture of special high-tech features and a dedicated power supply. Especially good at high voltage, high power supplies, the maximum output power of up to l one thousand kilowatts, the maximum output current is fifteen thousand amperes, the maximum output voltage of fifty thousand volts. Power and high precision, good stability, ripple, its performance is close to or reach the world advanced level, and on this basis, an increase of computer control, intelligent man-machine dialogue functions in the same industry in a leading position. November 2003, the Guangzhou five "China Electronic Product Reliability and Environmental Testing Research Institute Ceprei measurement test center" sampling, its main technical indicators higher than the national standard of 1 to 2 orders of magnitude.