As one of the earliest cities in China to develop the microelectronics industry, Wuxi has been deeply engaged in the semiconductor sector for decades. Starting from basic microelectronics in its early days, the city has steadily iterated and upgraded, firmly securing its reputation as "China's No. 1 City for Semiconductor Packaging and Testing." Today, it has formed a full-chain industrial cluster, becoming an indispensable core force in the domestic chip industry chain.
Decades of Deep Cultivation, Laying a Solid Industrial Foundation
Wuxi's semiconductor heritage dates back to the 1970s and 1980s. As early as the nascent stage of the domestic semiconductor industry, Wuxi took the lead in deploying the microelectronics field, accumulating a solid industrial foundation and scarce local talent resources early on, paving the way for the subsequent industrial boom.
Driven by the rapid rise of electronic manufacturing in the Yangtze River Delta, Wuxi seized the opportunity to absorb core capacities in IC manufacturing, packaging, and testing. The city continuously attracted foreign giants to settle in and cultivated local leading enterprises, steadily expanding its industrial scale.
After the turn of the millennium, Wuxi's semiconductor industry entered a phase of accelerated agglomeration. A series of benchmark projects, including SK Hynix, JCET, Hua Hong Semiconductor (Wuxi), and CR Micro, were successively launched and put into production. Capacities in memory manufacturing, power semiconductors, and high-end packaging and testing continued to converge.
Today's Wuxi is no longer just a single packaging and testing industrial base:
✅ Built a complete semiconductor full-chain cluster covering design, wafer manufacturing, packaging and testing, materials, and equipment
✅ The overall output value of the IC industry consistently ranks among the top in the country
✅ The output value of the packaging and testing sector has long ranked first in the country
✅ Gathered diverse business formats including memory manufacturing, power IDM, specialty processes, and supporting materials and equipment
Transitioning from leading in a single segment to driving synergistic efforts across the entire ecosystem, Wuxi has emerged as a crucial hub for finished chip manufacturing in the Yangtze River Delta.
Overview of the Matrix of Leading Packaging and Testing Enterprises in Wuxi
Packaging and testing is the core hallmark of Wuxi's semiconductor industry. This region has nurtured and attracted top domestic packaging and testing leaders, covering all niche segments such as high-end advanced packaging, memory packaging and testing, power device packaging and testing, and professional chip testing, accounting for half of the domestic semiconductor packaging and testing market.
JCET (Wuxi/Jiangyin Headquarters)
As the absolute leader in domestic packaging and testing and firmly ranking among the top three globally, JCET is a core pillar of Wuxi's semiconductor industry. It focuses on high-end technologies such as XDFOI Chiplet packaging, FC-BGA, 2.5D/3D stacked packaging, HBM (High Bandwidth Memory) packaging, and SiP (System in Package). It deeply empowers core fields including AI servers, high-end computing chips, automotive electronics, and communication chips. Boasting ultra-large capacity and a comprehensive suite of advanced packaging solutions, the company continues to expand its high-end computing chip packaging production lines, serving as a core guarantee for the advanced packaging of domestic high-end chips and the industrialization of Chiplet technology.
Haitai Semiconductor (Wuxi)
Jointly established by Taiji Industry and SK Hynix, the company is deeply engaged in the packaging and testing of DRAM memory chips and the assembly and testing of memory modules. It closely supports SK Hynix's Wuxi wafer production line, creating a complete local memory manufacturing-packaging and testing integration chain. With mature memory chip packaging and testing processes and authoritative automotive-grade certifications, it has long provided one-stop packaging and testing services for DDR series memory chips. As a major domestic memory chip packaging and testing manufacturer, it steadily ensures the stable operation of the Yangtze River Delta memory chip industry chain.
Shenghe Jingwei Semiconductor (Wuxi/Jiangyin)
A benchmark enterprise for 2.5D advanced packaging in China, it is also one of the few domestic companies to achieve large-scale mass production of silicon-based 2.5D packaging. It focuses on 12-inch wafer bump manufacturing, RDL (Redistribution Layer), silicon-based 2.5D interposer packaging, and Chiplet heterogeneous integration packaging. It precisely meets the high-density integration requirements of AI computing chips, filling the critical gaps in high-end packaging for domestic AI chips and helping domestic computing chips break through technical bottlenecks.
Wuxi CR Ansheng Technology
Affiliated to CR Micro, the company focuses on the packaging and testing of power semiconductor devices, analog chips, and sensor chips, deeply cultivating the high-quality sector of mature process packaging and testing foundry services. Its products are widely used in new energy, industrial control, photovoltaics, and home appliances. Specializing in automotive-grade and industrial-grade high-end power device packaging and testing, it serves as the core back-end supporting base for the domestic power semiconductor IDM industry chain, fully safeguarding the security of the local power chip supply chain.
Huajin Semiconductor Packaging Pilot Technology R&D Center
Located in the Wuxi New District, this national-level advanced packaging innovation platform focuses on the R&D, verification, and pilot production of cutting-edge technologies such as TSV (Through-Silicon Via) technology, 2.5D/3D packaging, wafer-level packaging, and SiP system integration. It undertakes core research tasks for domestic high-end heterogeneous integration packaging technology, bridging the entire industry-academia-research-application chain. It provides advanced technology support and process verification services for the national semiconductor industry, leading the iterative upgrade of domestic 3D packaging technology.
Infineon Technologies (Wuxi)
As the core IDM packaging and testing base in China for global power semiconductor giant Infineon, the facility focuses on the packaging and testing of automotive-grade power semiconductor devices and smart card chips. It operates under a stringent international automotive certification system, with products covering high-end fields such as NEVs (New Energy Vehicles), energy management, and industrial control. It significantly enhances Wuxi's industrial layout for automotive-grade chip packaging and testing, driving the high-end development of the local automotive electronics industry chain.
Wuxi V-Test Semiconductor Co., Ltd.
A professional leading third-party independent chip testing company, its business covers wafer testing, final testing, burn-in testing, and system-level SLT (System Level Test) testing. It precisely meets the requirements for high-reliability products such as AI chips, automotive-grade chips, and communication chips. It provides full-process chip verification and testing services, filling the critical gaps in quality inspection for domestic high-end chips and perfecting Wuxi's integrated supporting system of "packaging and testing + testing."
Wuxi Tongzhi Microelectronics (Under ASE Group)
Backed by global packaging and testing giant ASE Group, it is a well-established enterprise in the domestic mature process packaging and testing sector. Its main business includes basic IC packaging and discrete device packaging, focusing on mature sectors such as consumer electronics and analog chips. It continuously and steadily outputs high-quality capacity, perfecting Wuxi's supporting system for mature process packaging and testing and solidifying the industrial foundation.
As the No. 1 City for Semiconductor Packaging and Testing in China, Wuxi is continuously empowering the independent and controllable development of the domestic IC industry with solid industrial strength, a clear development path, and a complete industrial ecosystem, becoming the core force for the high-quality development of China's semiconductor industry!
What other high-quality semiconductor companies in Wuxi do you know? Welcome to share and discuss in the comments section!