人人妻人人澡人人爽欧美一区双,曰韩无码二三区中文字幕,国产人碰人摸人爱免费视频,国产一区二区精品久久岳

Dr. Zhu Junshan is a member of the International Society of Microelectronics and Packaging, and one of the top ten in China's electronics industry. He focuses on the research, development and marketing of electronic products. He has 5 invention patents and 15 utility model patents, driving STH Electronics to become a well-known company in electronics component industry. the head of technical support for Sino-Italian France, Dr. Zhu loves research, and welcomes all technical enthusiasts and electronic enthusiasts to discuss and exchange.