From May 27 to 29, 2025, the 6th China (Shanghai) International Metrology and Testing Technology and Equipment Expo was grandly held at the Shanghai World Expo Exhibition and Convention Center. The China International Metrology Exhibition is a special exhibition with metrology as its theme. It is jointly organized by the Shanghai Metrology Association and the China Metrology Association. It is established with an eye on the country's development goal of all-round localization of instruments and meters. The theme of this exhibition is "Metrology builds a foundation for new quality productivity to promote sustainable development" to promote the positive role of metrology in the context of "sustainable development". The organizers of this exhibition invited authoritative figures from national and provincial and ministerial metrology institutes to visit the site to exchange and interpret the goals and directions of the future development of the metrology industry. It attracted metrology institutions, scientific research institutes and leading companies in the industrial chain from all over the world to participate in the exhibition. SUNJ Energy Luoyang Co., Ltd. worked together to independently develop and produce high-performance lithium primary battery products and smart metering energy solutions to appear at the exhibition, and discussed the innovation trends of metering technology with industry experts, customers and partners to demonstrate the company's core technology advantages in the field of smart meters.

Focus on the frontier of measurement and explore the future of the industry

In recent years, with the emergence of a large number of high-end and intelligent measurement research results, the development of domestic instruments and meters has become increasingly rapid. The exhibits of this exhibition cover measurement standard devices, intelligent instruments and sensors, smart water meters, electricity meters, gas meters, precision measurement and measurement test solutions and other fields, focusing on the technological breakthroughs of the measurement industry in the digital and intelligent transformation. Experts from the State Administration for Market Regulation, China Institute of Metrology and other institutions pointed out at the meeting that with the increase in the demand for refined global energy management, the demand for high-reliability and long-life power supplies for smart meters has become increasingly prominent, and lithium primary batteries, as key energy carriers, will directly promote the performance innovation of metering equipment through their technological upgrades.

At the exhibition, SUNJ Energy's booth was designed with the concept of "smart energy, precise empowerment". Through physical displays, technical videos and scenario-based application cases, the company's lithium primary battery products were presented from multiple angles. The mature application of smart water meters, electricity meters, gas meters and other fields. Many industry customers stopped to communicate and spoke highly of the product's high and low temperature adaptability, ultra-long life and stability.

Technical guidance: Four core advantages of SUNJ Energy's lithium primary battery

As a traditional enterprise in the field of disposable lithium primary batteries in China, SUNJ Energy has always focused on providing more efficient and stable energy solutions for smart meters. The ER series of lithium thionyl chloride batteries (Li-SOCl₂) and lithium manganese batteries (Li-MnO₂) products exhibited this time have become power supply solutions in the metering field with the following advantages:

1. Ultra-long life and reduced maintenance costs

The company's lithium-thionyl chloride batteries use unique sealing technology and electrolyte formula, with an annual self-discharge rate of less than 1%. In smart meters, maintenance-free replacement can be achieved for 5-10 years, significantly reducing the frequency of equipment replacement and helping customers achieve full life cycle cost optimization.

2. Wide temperature range adaptation, stable power supply in extreme environments

In response to the low temperature challenges faced by outdoor meters, SUNJ Energy batteries can output stably in the range of -40℃ to +85℃, which is especially suitable for heat meters and gas meters in the cold northern regions, solving the pain point of traditional power sources with sudden capacity drop at low temperatures.

3. High energy density, helping equipment miniaturization

Through material innovation and structural design, the battery volume energy density is increased by 20%, which provides the possibility for meter manufacturers to design lighter, thinner and more compact equipment, in line with the industry's trend of miniaturization and integration.

4. Safe and reliable, with international certification

The product complies with UL, CE, RoHS, UN38.3, MSDS, REACH and other certifications, and meets the industry's authoritative product safety standards.

Deepen cooperation and build a smart metering ecosystem

During the exhibition, SUNJ Energy communicated with many well-known metering companies and held a roundtable discussion with industry partners on the topic of "Energy demand for metering equipment under the dual carbon goals". With the popularization of AMI (Advanced Metering Architecture) and NB-IoT technology, smart meters have put forward higher requirements for power consumption management and communication support. SUNJ Energy is developing a new generation of products with low power consumption + pulse discharge technology to match the digital needs of future smart cities. "

Driven by innovation, serving global energy metering

This exhibition not only strengthened SUNJ Energy's brand influence in the field of metering, but also further clarified the direction of technology research and development through in-depth exchanges with customers. In the future, the company will continue to focus on emerging scenarios such as smart metering and the Internet of Things, empower global energy management with high-performance lithium battery products, and implement the corporate mission of "SUNJ Energy, leading innovation".