Shenzhen Hichong Technology Co.,Ltd is the main backbone enterprise in our country that develops, produces and sells Houle components and Hall effect sensor. The company is a joint-stock company based on the original Nanjing Semiconductor device plant. At present, it is the only scientific research and production unit of Houle components and Hall effect sensor. With integrity, innovation and cooperation as the company's purpose, and in 2001 through the ISO9001-2000 quality system, the establishment of the only Hall effect sensor production line, and in 2002 through the production line certification. The company has a scientific research and management team with excellent technology and scientific management, and has formed a scientific research and production experience and management model of Zero Civil Hall effect sensor. At present, we have technology development center, Product Test Center, production line and equipment measuring room, this makes scientific research, production, testing, testing, screening the whole process of product quality has been fully guaranteed.