I used to be an assistant electrical engineering professor at Shenyang Institute of Engineering in China, and after only one year, I earned a distinguished teaching award. From my teaching experience, I gained strong EE theory and conceptual knowledge. In the U.S., I have held engineering positions at a manufactory company, a chip design company, and an assembly company. I have designed multi-circuits such as filters for networks, various Op-Amps, AD/DA converters, and a wide dynamic range of Amplitude Gain Controller's circuits just to describe a few. I have experience on the PC board level and working with multiple equipments in the laboratory. I am familiar with OrCAD, PSpice, and also the process of verifying basic data in chips. I have experience in handling the product process, procedure, and BOMs. Additionally, I am familiar with the electronic test tools: voltmeter, oscilloscope, signal generator, etc. I also have experience in working with customer service.