The main products of Qinhuangdao Beidaihe Lande Technology Co., Ltd. include: series piezoelectric acceleration sensors, series strain gauges, series piezoelectric sensors, material mechanics comprehensive experimental platform, dynamic resistance strain gauges, static resistance strain gauges, filters, charge amplifiers, vibration detectors, comprehensive testers, static strain testing and analysis systems, vibration (dynamic) signal acquisition and analysis systems, standard strain simulators, basic physical quantity testing analyzers, gamma ray level gauges, electronic pressure detectors, paraffin forming machine monitoring instruments, solar heating and automatic control systems (solar heating, solar heating), etc. Our company's gamma ray level gauge and filter have been selected by countries such as Japan and the United Kingdom. The company is located in Beidaihe Economic and Technological Development Zone, and its predecessor was Beidaihe Electrical Automation Research Institute established in June 1992. In order to further develop itself, Qinhuangdao Beidaihe Rand Technology Co., Ltd. was registered in April 2002. The company covers an area of 7000 square meters with a building area of 3000 square meters. It specializes in the research and development, manufacturing, and market sales of various sensors, electronic instruments, solar heating and automatic control systems, data acquisition software and hardware systems, and IoT projects. It is a private technology-based enterprise. More than 60% of the company's employees have a college degree or above, and more than 30% of the employees are directly engaged in scientific research and development. The main researchers have many years of experience in the research and testing of electronics, sensors, and computer software, thus the company has strong comprehensive research and development capabilities in technology. In 2003, the company passed the ISO9001:2000 quality management system certification and has been rated as a credit excellent small and medium-sized enterprise in Hebei Province and Qinhuangdao City since 2005. The company's flagship product is an industrial equipment online monitoring system based on Internet of Things technology, which realizes multi parameter composite, digital output, and intelligence of vibration temperature sensors. This system has a bus unit module with A/D conversion function and bus communication function, which adapts to the digital connection of numerous sensors and instruments. This system has a data collector with multi bus technology, which enables data integration and transmission compatible with different physical buses and communication protocols. The computer software functions of this system based on the Windows platform mainly include exchanging data with data collectors through mobile GPRS wireless network or RS485 bus, realizing the system's software and hardware construction, parameter setting, and reading measurement data; Data storage, data analysis, over threshold alarm, SMS function; Terminal display and operation interface. This system has been successfully applied to real-time online monitoring of equipment in a large coal transportation port and a refinery affiliated with Sinopec, and has received high praise from users. This system can be applied not only to industrial equipment monitoring, but also to industrial toxic and harmful gas monitoring, urban infrastructure safety monitoring and environmental protection monitoring, facility agriculture environmental monitoring, etc. This system has passed the appraisal of scientific and technological achievements, and its overall technology is at the leading level in China. Some technologies have filled the gaps in China. The company's conventional instruments mainly produce instruments and sensors for impact vibration detection, stress-strain detection, and material level detection. There are more than ten series and over a hundred varieties of products, with stable and reliable quality, deeply trusted by users, especially in the field of computer front-end instruments with unique technical advantages. The product has won multiple gold awards and technological progress awards, and is widely used in fields such as teaching and research, aerospace, national defense construction, vehicle engineering, railway bridges, metallurgy and petrochemicals, water conservancy and power, construction engineering, and warehousing terminals. Users from colleges, research institutes, and industrial and mining enterprises across the country provide high-quality and reliable testing equipment for various fields, receiving unanimous praise from users. Our aim is to develop through technology, treat people with sincerity, and win the trust of users with high-quality products and services. Continuous improvement is our eternal pursuit.