Tunkia 2024 Annual Report: A Year of Innovation, Excellence, and Global Growth

As we reflect on the accomplishments of 2024, it is clear that this has been a year of significant growth and achievement for Tunkia. Through innovation, collaboration, and dedication to excellence, we have made remarkable strides in both our technological advancements and our contributions to the industry. From pioneering high-precision measurement instruments to breaking new ground in global market outreach, Tunkia has continued to lead the way in electromagnetic measurement and control technologies. This year, our efforts have been recognized with prestigious awards and honors, underscoring our commitment to quality, reliability, and continuous improvement.

---

Products and Technology

Tunkia IPMA Integrated Precision Measurement Architecture

Release of the Next-Generation Precision Instrument Measurement System Architecture, Empowering High-Quality Development of Productivity

This architecture combines precision electromagnetic measurement technology with modular design and high-speed bus technology, providing a platform for developing ultra-high-precision, modular, and highly reliable measurement instruments.

• Features dual isolation design for power and digital components, meeting the needs of modular instruments with precision ranging from 1 ppm to 50 ppm.

• Composed of a main control board and functional boards, with plug-and-play, interchangeable, universal design, and expandable functionality significantly enhancing maintenance efficiency.

• Available in various specifications, including 1/2 2U, 4U, and 5U formats, allowing users to flexibly configure test systems as needed.

• Offers options for battery or mains power supply, suitable for different scenarios such as precision measurement or long-duration operations.

---

High-End Electromagnetic Measurement Instruments

TH1950 High-Precision Multifunction Calibrator

This instrument is an essential standard device for calibrating high-precision 7.5 or 8.5 digits digital multimeters. It represents the pinnacle of commercialized electrical measurement instrument technology. As the first domestically developed instrument comparable to the world's top-tier counterparts, it breaks the long-standing technical monopoly of international manufacturers.

TA3310 Three-Phase Wideband Standard Energy Meter

As the first domestically developed Class 0.005 three-phase standard energy meter, the TA3310 achieves a domestic alternative to the world's most precise commercialized energy standard instruments. It extends the frequency range from power frequency to the kHz level and provides precise measurements under milliampere-level low currents and low power factors. Additionally, it features an innovative modular design using board cards.

TA3200, TA3210 Three-Phase Wideband Low-Current Power Standard Source and Standard Meter

These instruments achieve Class 0.005 power and energy accuracy under conditions of 20 μA to 120 mA, effectively addressing the longstanding challenge of low-current energy traceability faced by the power and metrology sectors.

---

Standards and Patents

Tunkia participated in the drafting of four national standards and three industry standards, all of which were officially released in 2024.

National Standards (4)

GB/T 28569-2024 Electric energy metering for electric vehicle AC charging spot

GB/T 29318-2024 Electric energy metering for off-board charger of electric vehicle

GB/T 44391-2024 Methods of measurement of the magnetostriction characteristics of grain-oriented electrical steel strip and sheet by means of a single sheet tester and an optical sensor

GB/T 13888-2024 Methods of measurement of the coercivity (up to 160 kA/m) of magnetic materials in an open magnetic circuit

Metallurgical Industry Standards (3)

YB/T 6247-2024 Measurement of the specific total loss for electrical steel strip and sheet-Part 1: Method of including higher harmonic components

YB/T 6248-2024 Measurement of the specific total loss for electrical steel strip and sheet-Part 2: Method under DC biased magnetization

YB/T 6249-2024 Method of measurement of the magnetostriction characteristics for electrical steel strip and sheet

Throughout the year, Tunkia filed 9 new patent applications, including 2 international patents, bringing the total number of patent applications to 96.

---

2024 Company Major Events

January: The company’s Smart Exhibition Hall was officially opened, showcasing products, technological strength, and brand value in all aspects.

Customers visiting the smart exhibition hall

March: The 10kA AC/DC high current source laboratory was completed and delivered to customers, receiving unanimous praise.

10kA AC/DC high current source laboratory

---

April: The the Spring 2024 Progress Meeting of the National Key R&D Program, Development of Internationally Equivalent High-Precision Measuring Instruments and Standards (Phase I) was successfully held at Tunkia.

Spring 2024 Progress Meeting of the National Key R&D Program

May: Tunkia participated in the 6th China (Shanghai) International Metrology Measurement Technology and Equipment Exhibition 2024 (CMTE CHINA 2024), showcasing four major series and 27 products.

TUNKIA at CMTE CHINA 2024

May: Tunkia attended the “World Metrology Day” conference organized by the National Metrology Centre (NMC), in collaboration with HAS in Singapore, and the 21st Comprehensive Seminar and Equipment Exhibition of Measurement Instruments in South Korea.

TUNKIA at World Metrology Day in Singapore

June: The company began the construction of the Quantum Communication and DC Voltage Reference Laboratories, further improving its traceability system.

---

July: Tunkia's project "Research and Application of Key Technologies for High-Precision Wideband Measurement Based on DFMEA Strategy" was awarded the "2024 China Quality Association Quality Technology Award (Project Award) - Second Prize."

August: Tunkia's projects "Key Technology Research and Large-Scale Application of Power System Physico-Chemical Test Robots" and "Key Technology and Equipment for Interaction Measurement and Testing of Electric Vehicle Power Networks" both received the "2024 China Instrument Manufacturer Association Scientific and Technological Progress Award - Second Prize."

September: Under the Lancang-Mekong Cooperation (LMC) framework supported by the Ministry of Foreign Affairs, led by the National Institute of Metrology, China (NIM), visiting scholars from metrology institutes of five countries exchanged and learned advanced power metrology experiences at Tunkia, jointly contributing to the new chapter of Lancang-Mekong Clean Energy Metrology Technology Exchange and Development.

September: Tunkia's "Automatic Measurement Device and System for Magnetic Properties of Electrical Steel Sheets" was awarded the highest rating of "Overall Technology Internationally Leading" by the China Instrument Manufacturer Association (CIMA) for technological achievements.

---

October: Tunkia's " kiloampere High Current Sensor Multi-Position Automatic Testing System" was selected as a typical case in the "Metrology Promoting the Development of New Productivity" list by the State Administration for Market Regulation.

October: The "Seminar on Testing and Application Technologies for Electrical Steel and Amorphous Alloy Cores" was hosted by Tunkia, focusing on the testing technologies, application innovations, and market trends of electrical steel and amorphous alloy materials.

October: The first Tunkia Overseas Distributor Conference was grandly held, with distributors from 15 countries and regions attending, marking the beginning of a new chapter in Tunkia’s global strategy.

The first Tunkia Overseas Distributor Conference

November: Tunkia was recognized as the "2024 Manufacturing Quality Benchmark in Hunan Province" for its practical experience in improving product reliability.

December: Tunkia was accredited as a "Hunan Province Industrial Design Center," a high recognition of the company’s strong industrial design innovation capabilities, rich achievements, and advanced status in the Hunan province.

December: Tunkia was recognized by the Hunan Provincial Development and Reform Commission as a "Hunan Provincial Enterprise Technology Center," affirming its high-level technological innovation capabilities.

---

As we look ahead to 2025, Tunkia is poised to continue its journey of innovation and leadership in the industry. The progress we have made this year in developing cutting-edge technologies, expanding our global presence, and strengthening our core competencies lays a solid foundation for the future.

With a steadfast commitment to quality, innovation, and customer satisfaction, we are confident that Tunkia will continue to achieve new heights and set industry standards, creating lasting value for our partners, customers, and the metrology industry.