Hundreds of Millions in A+ Round Financing Secured! Prosemi Leverages Full-Industry-Chain Advantages to Lead Domestic Substitution of Current Sensing Reistors and Drive Industry Upgrade
Suzhou, Jiangsu, China – October 28, 2025 – National-level “Specialized, Refined, Unique, and Innovative ‘Little Giant’" and Jiangsu Gazelle Enterprise, Suzhou Prosemi Micro-electronic Technology Co., Ltd. (hereinafter “Prosemi” or “PROSEMI”) has officially announced the completion of an A+ round financing worth several hundred million yuan. The round was co-led by Qianhai Ark Fund and Shenzhen Capital Group, with participation from Guotai Junan Innovation Investment and Jinpeng Fund. The funds will be dedicated to deepening core technology R&D, scaling up production capacity, and expanding global market channels, providing crucial momentum to break the monopoly of European, U.S., and Japanese enterprises in the high-end Current Sensing Components (CSR, current sensing resistors or current shunt resistors) market.
Industry Pain Points: A Hundred-Billion-Yuan CSR Market Awaits Disruption, Domestic Substitution Urgent
As the industrial cornerstone supporting the information technology sector, domestic control over basic electronic components is essential for supply chain security. Current sense components (CSR, current sense resistors or current shunt resistors), which utilize alloy materials and Ohm’s law for current measurement and circuit protection, are core passive components in battery management systems, motor drives, inverters, and other modules. They are widely applied in industrial control, new energy vehicles, photovoltaic energy storage, consumer electronics, smart home devices, robotics, and AI applications.
Data shows that China is the world’s largest consumer of basic electronic components, with annual consumption in the trillions. In the current sense resistors segment alone, shipments in the Greater China region reached 36.7 billion units in 2025, growing steadily at 20% annually, with a market size exceeding 10 billion yuan. However, the industry has long faced the problem of “large market, low domestic share”: the top five global companies (CR5) control around 90% of the market, all based in Europe, the U.S., Japan, or Taiwan. High-end products such as high-power metal alloy shunt resistors and automotive-grade precision current sensing resistors remain dominated by foreign companies, with domestic penetration in mid-to-high-end products below 10%, highlighting the urgent need for local substitution.
Prosemi’s Hard-Tech Breakthrough: Full-Industry-Chain Layout + Full Technology Platform Creates Domestic Current Sensing Resistors Benchmark
Founded in 2019, Prosemi was established with a focus on solving the “bottleneck” problems in the current sense resistors sector. Its core team, drawn from leading companies including Yageo, Ta-i Technology, Walter Electronic, AEM, Littelfuse, and ZTE, leverages deep industry expertise and follows a dual-driven strategy of internal R&D breakthroughs and external M&A integration to rapidly build differentiated competitive barriers.
In terms of the industry chain layout, Prosemi has pioneered a vertically integrated closed loop from upstream new materials to high-end equipment and components:
• Upstream materials: Developed proprietary alloy resistor raw material formulations and production processes, ensuring continuous innovation, scalable production, and fully controlled product performance.
• High-end equipment: Independently developed continuous electron-beam welding production line equipment, achieving full domestic sourcing. Prosemi is the first domestic company capable of supplying ultra-thin lines below 1mm and above 3mm, and the only domestic provider able to mass-produce 0.1mm ultra-thin and 1.5mm ultra-narrow metal strips.
• Production processes: Prosemi is the first in China to simultaneously master three current sense resistors technology platforms—precision stamping and plastic encapsulation, yellow-light photolithography etching, and electron-beam welding—covering package low resistance metal alloy current sense resistors, thin-film alloy current sensing resistors, high-power shunts, and modular products across thousands of SKUs. Product performance metrics now rival international brands.
Currently, Prosemi has built over 20,000 square meters of manufacturing bases in Suzhou, Jiaxing, and Dongguan, ensuring robust mass-production and delivery capabilities. Commercially, the company has achieved remarkable results: accumulating leading customers in industrial control, new energy vehicles, photovoltaic energy storage, consumer electronics, and smart home devices, while accelerating entry into emerging markets like robotics and AI applications. The company maintains rapid growth, winning multiple key industry orders and breaking the foreign monopoly in the high-end shunt resistors market.
Strong Capital Backing: Institutional Confidence Accelerates Domestic Substitution
Participants in the financing round have expressed strong confidence in both Prosemi and the domestic substitution trend in the current sense resistors sector.
• Tu Zhenkun, Founder of Prosemi, stated:
“PROSEMI is a startup focused on critical niche segments. We aspire to be a respected company in the electronic components industry, leveraging hard-tech to support national industry and continuously contribute to domestic substitution.”
• Zhang Qianyi, Qianhai Ark Fund, commented:
“Current sensing resistors, often called the industrial ‘black rice,’ are widely applied across new energy, consumer electronics, industrial automation, and energy storage. They are fundamental downstream components with stable demand that grows alongside high-performing industries. Currently, domestic current sense resistors penetration is below 10%, but local companies are increasingly competitive in performance, process, support, and cost, and the trend toward supply chain diversification and self-controllability further expands the potential for domestic substitution. Prosemi is among the top-tier current sensing resistor companies, and one of the few in China to achieve full vertical and horizontal industry chain integration, controlling key processes from material smelting to electron-beam welding and equipment development. Its growth potential is substantial.”
• Zhang Ling, Shenzhen Capital Group, emphasized:
“Electron beam welding is one of China’s 35 ‘bottleneck’ technologies and a mainstream current sensor solution. Prosemi, through independent breakthroughs and strategic acquisitions, has completed vertical integration from raw materials to high-end equipment and products and achieved full coverage across all current sense resistors technology platforms. This enables it to meet the requirements of all application scenarios, differentiating it from competitors focused on single platforms. With a highly experienced team, a complete organizational structure, and founders with deep industry insight, Prosemi has the strategic awareness and capability to continuously integrate and optimize, showing great long-term potential.”
• Jiang Zhifan, Guotai Junan Innovation Investment, noted:
“Prosemi possesses two key competitive advantages in the high-growth current sense resistors segment: a full product matrix and a full-industry-chain closed loop. It is not just pursuing domestic substitution but is a locally innovative, globally competitive potential industry leader. With strong momentum from automotive and industrial electronics, Prosemi is well-positioned to rapidly grow and become a benchmark for China’s electronic components industry upgrade.”
Looking Ahead: High-End, Global Focus to Lead Industry Upgrade
As industries such as new energy, AI, and robotics continue rapid development, current sensing resistor products are evolving toward ultra-high precision, miniaturization, and high-power capabilities, with increasing demand from emerging applications. Leveraging this financing, Prosemi will continue to strengthen technology iteration and production capacity, expand global customer reach, increase market share in the 100+ billion yuan current sense resisitors and shunt resistors market, promote domestic substitution of mid-to-high-end products, and advance China’s basic electronic components industry toward high-quality development, steadily moving toward its goal as a key global participant in the current sensing resistors sector.