Since 1997, Weibo has provided various isolation measurement products for railway signal monitoring, locomotive electrical integration and traction power supply system. With the advantages of high precision, low power consumption, high reliability and good on-site adaptability, the product runs steadily in nearly 3000 stations in the country, with a number of more than 3 million. In recent years, relying on the company's many years of railway application experience, the company has developed frequency shift signal monitoring sensors, high-voltage pulse signal monitoring sensors, turnout voltage monitoring sensors, turnout switch current power sensors and many other products to obtain national patent authorization, technology level occupies the leading position in the industry, market share. The volume is the first, contributing to the safe operation of the railway system.