Chongqing Silian Measurement and Control Technology Co., Ltd. is a wholly-owned subsidiary of Chongqing Chuanyi Automation Co., Ltd. (603100), formerly known as Sichuan Instrument 18th Factory established during the "Third Line Construction" period. It specializes in the research and development, manufacturing, sales, and service of industrial automation instruments. The company's core products, PDS intelligent pressure transmitters, level gauges, and temperature transmitters, are widely used in fields such as petroleum, chemical, power, metallurgy, building materials, light industry, and nuclear industry.

For more than 40 years, we have weathered storms and passed on innovation. Four link measurement and control has grasped the pulse of the times, continuously filled technological gaps, stood up the backbone of the national instrument industry, and written a new chapter of industry serving the country.