About Us

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  Zhuhai Sigma Electronics Limited is a specialized manufacturer of quartz crystal frequency components and crystal equipments. The main products include Quartz Crystal Resonator(HC-49U, HC-49S), Cylindrical Crystal(&＃934;3x8, &＃934;3x9), Clock Oscillator, Automatic Crystal Frequency Adjustment Machine and Vacuum Coating Machine etc.
  Sigma Electronics is a young and dynamic corporation, it gathered a group of professionals full of ideal and ambition, including the topping technical expert, experienced administrator, sales with pioneer spirit, and a lot of excellent workers. The most important thing is all of them have the common belief \"offer the best products and service to the customers\". Sigma aims to be a first-class corporation in the world.
  Sigma Electronics expanded swiftly since foundation, it has set up successively crystal component workshop in Yantai and crystal equipment workshop in Zhuhai. Zhuhai is adjacent to Hong Kong, Shenzhen and Macao, owning prosperous industry and advantaged location. So with these favorable conditions of Zhuhai, Sigma hope to master the development of new technology faster and respond to the change of market better.
  Sigma Electronics sincerely hope to establish close relations with friends all over the world and make progress together