Hua Hong Semiconductor
Corporate brand
UnclaimedChinese pure-play semiconductor foundry serving applications that rely heavily on specialty and mature process technologies.
Last updated October 9, 2026
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Overview
Hua Hong Semiconductor Limited is a Shanghai-based Chinese semiconductor foundry established in 1996 during a state-supported effort to develop the country's integrated-circuit industry. Unlike an integrated device manufacturer, a pure-play foundry manufactures chips designed by other companies rather than selling a broad portfolio of chips under its own consumer brand. Its business is therefore centered on wafer fabrication, process platforms, manufacturing capacity, and technical support for fabless semiconductor customers. The company's industrial lineage includes Shanghai Huahong Microelectronics, established in 1996, and HHNEC, a 1997 joint venture created with NEC China. HHNEC initially produced dynamic random-access memory for NEC, but it discontinued DRAM manufacturing in 2003 and moved toward foundry production. Separately, Grace Shanghai was established in December 2000 by Grace Cayman as a pure-play foundry. HHNEC and Grace Shanghai were combined in 2011 to form Shanghai Huahong Grace Semiconductor Manufacturing Corporation. That manufacturing organization subsequently became associated with Hua Hong Group, described as a wholly owned subsidiary of Hua Hong Semiconductor Limited. Hua Hong completed its Hong Kong listing in 2014. Its later capital-raising plans included a proposed Shanghai Stock Exchange listing in 2023, intended to support additional capacity and the development of more advanced process technologies amid growing restrictions on China's access to foreign semiconductor equipment and technology. The company's manufacturing network is concentrated in Shanghai, where it operates three 200-millimeter fabs commonly identified as HH Fab1, HH Fab2, and HH Fab3. It also operates or controls 300-millimeter manufacturing capacity through Shanghai Huali Semiconductor Manufacturing Corporation, commonly known as HLMC, including facilities identified as HH Fab5 and HH Fab6. A further 300-millimeter facility, HH Fab7, was developed in Wuxi's National High-Tech Industrial Development Zone and began operations in 2019. The company's portfolio is associated primarily with specialty and mature-node manufacturing rather than leading-edge logic. Its capabilities include process technologies for embedded non-volatile memory, power devices, analog and power-management circuits, display-related products, and other applications for which manufacturing reliability, high-voltage options, non-volatile memory integration, and cost-efficient production can be more important than the smallest geometric feature. Through HLMC, the group has reported capability at the 28-nanometer and 22-nanometer process generations. The company also participates in research and development through an integrated-circuit research center near the Zhangjiang semiconductor cluster, where companies, universities, and research institutions work on advanced process development. Hua Hong is generally positioned as one of mainland China's largest foundry operators, behind SMIC in domestic scale according to the cited reference material. Its competitive identity rests on domestic manufacturing capacity, a broad specialty-process offering, and its role in China's effort to strengthen local semiconductor supply chains. At the same time, its operations are exposed to the capital intensity of wafer fabrication, cyclical demand, equipment constraints, and geopolitical controls affecting semiconductor manufacturing technology. The brand is principally a business-to-business manufacturing platform rather than a consumer-facing chip brand.
History
Hua Hong Semiconductor emerged from China's national push to establish a domestic integrated-circuit industry. In 1996, Shanghai Huahong Microelectronics was created in Shanghai. The organization, now associated with Hua Hong Group, provided an institutional foundation for later wafer-fabrication activities and reflected the Chinese government's effort to build semiconductor capabilities rather than rely exclusively on imported chips. In 1997, Huahong and NEC China formed HHNEC. The joint venture initially manufactured DRAM for NEC, giving it experience in semiconductor production and linking the developing Chinese industry with an established international electronics company. DRAM manufacturing was phased out in 2003. HHNEC then shifted toward pure-play foundry operations, producing wafers for customers rather than concentrating on memory products sold under its own brand. A second part of the company's manufacturing history began in December 2000, when Grace Shanghai was established by Grace Cayman as a pure-play foundry. HHNEC and Grace Shanghai were merged in 2011 into Shanghai Huahong Grace Semiconductor Manufacturing Corporation. The combined manufacturing organization later came under Hua Hong Group, which is described in the reference material as wholly owned by Hua Hong Semiconductor Limited. This consolidation created the industrial base for the company's subsequent multi-fab foundry network. Hua Hong Semiconductor became a publicly traded company on the Hong Kong Stock Exchange in 2014. Public-market access gave the company a financing platform for capital-intensive wafer-fabrication projects. Its later development focused on both established specialty processes and larger-diameter wafer production. The company operates three identified 200mm fabs in Shanghai: HH Fab1 in Jinqiao and HH Fab2 and HH Fab3 in Zhangjiang. The reference material attributes approximately 180,000 wafers per month of total 200mm capacity to these facilities. The group expanded its 300mm manufacturing presence through Shanghai Huali Semiconductor Manufacturing Corporation, or HLMC. Two facilities are identified as HH Fab5 in Zhangjiang and HH Fab6 in Kangqiao. A further facility, HH Fab7, was built in Wuxi's National High-Tech Industrial Development Zone; operations at the Wuxi plant began in 2019. The expansion reflects the economic importance of scale in foundry manufacturing, where larger wafers can improve output and help manufacturers serve higher-volume applications. Research and development has been associated with an integrated-circuit research center near the Zhangjiang semiconductor cluster. The center works with semiconductor companies, universities, and research institutions and has been described as pursuing development on 300mm wafers, including work directed toward 7nm to 5nm technologies. Commercially reported production capability remains more limited than that research ambition: the most advanced process capability identified in the reference material is 28nm and 22nm through HLMC. In 2023, Hua Hong sought to raise capital through a Shanghai Stock Exchange listing. The stated strategic context was the need to finance advanced technology and capacity while U.S. restrictions increasingly affected China's access to semiconductor-manufacturing equipment. The company's position consequently combines commercial foundry competition with national supply-chain priorities. It is described as mainland China's second-largest chip-maker behind SMIC and as holding a 2.6 percent global foundry market share in 2021, according to the cited reference material. The company's more recent external environment has also been shaped by geopolitical scrutiny. The reference material reports a 2025 U.S. Department of Defense statement linking Hua Hong to China's military sector and a 2026 U.S. Commerce Department order affecting shipments of semiconductor-manufacturing tools from U.S. suppliers. These developments underscore the strategic sensitivity of the foundry industry and the potential effect of export controls on Hua Hong's equipment access, technology road map, and international relationships.
- 2023
Shanghai listing plan announced
[1]The company sought a Shanghai Stock Exchange listing to raise capital for capacity and advanced-process development.
- 2019
HH Fab7 began operations in Wuxi
[1]The company's new 300mm HH Fab7 facility in Wuxi began operations.
- 2014
Hong Kong stock-market listing
[1]Hua Hong Semiconductor was listed on the Hong Kong Stock Exchange.
- 2011
HHNEC and Grace Shanghai merged
[1]The two manufacturing organizations were combined to create Shanghai Huahong Grace Semiconductor Manufacturing Corporation.
- 2003
HHNEC moved away from DRAM manufacturing
[1]HHNEC phased out DRAM production and transitioned toward pure-play foundry operations.
- 2000
Grace Shanghai established
[1]Grace Shanghai was formed by Grace Cayman as a pure-play semiconductor foundry.
- 1997
HHNEC joint venture formed
[1]Huahong and NEC China formed HHNEC, initially to manufacture DRAM for NEC.
- 1996
Shanghai Huahong Microelectronics established
[1]Shanghai Huahong Microelectronics was established as part of China's effort to develop a domestic integrated-circuit industry.
Products and positioning
A mainland Chinese pure-play foundry focused on specialty and mature semiconductor processes, domestic manufacturing capacity, and selected advanced-node production through its HLMC subsidiary.
Semiconductor foundry
Specialty-process foundry services
Hua Hong's core offering is contract wafer manufacturing for fabless semiconductor customers. The company provides access to process technologies, fab capacity, manufacturing engineering, and production support rather than marketing a large consumer-facing chip portfolio under its own brand. Its foundry model is oriented toward applications where process specialization, production stability, and cost are important.
Memory and specialty logic
Embedded non-volatile memory processes
The company offers foundry process platforms associated with embedded non-volatile memory. Such platforms allow memory functionality to be integrated into products such as microcontrollers, smart-card devices, connectivity components, and other system chips. The offering illustrates Hua Hong's emphasis on specialty integration rather than only conventional leading-edge logic.
Power semiconductors
Power and high-voltage processes
Hua Hong manufactures process technologies for power-related and high-voltage semiconductor applications. These technologies can support power-management integrated circuits, discrete or integrated power devices, and other products that require voltage-handling and reliability characteristics distinct from those of high-density digital logic.
Analog semiconductors
Analog and mixed-signal processes
Analog and mixed-signal foundry services support chips that combine continuous-signal circuitry with digital logic. These process offerings are relevant to power management, sensing, communications, consumer electronics, and industrial applications. They fit the company's broader specialty-foundry strategy and complement its memory, power, and display-related capabilities.
Advanced-node foundry
28nm and 22nm manufacturing
Through Shanghai Huali, Hua Hong identifies 28nm and 22nm production as its most advanced process capability in the cited material. These nodes can serve more demanding logic and specialty applications while remaining distinct from the newest commercially deployed leading-edge processes.
Controversies
2026
Reported U.S. restrictions on semiconductor-equipment shipments
The reference material states that the U.S. Department of Commerce ordered multiple U.S. semiconductor-equipment makers to stop shipping tools to Hua Hong, citing national-security concerns. The reported action could constrain equipment access and technology development.
2025
Reported U.S. military-linked company designation
The reference material reports that the U.S. Department of Defense stated Hua Hong Semiconductor merited inclusion on a list of companies linked to China's military. The report introduced additional geopolitical, compliance, and investor scrutiny.
Brand decisions
2023
Proposed Shanghai Stock Exchange listingStrategyBackground
Hua Hong sought additional capital for advanced process development and fab expansion while export controls increased uncertainty around access to foreign semiconductor equipment.
Action taken
The company pursued a Shanghai Stock Exchange listing as a potential source of financing.
Aftermath
The plan underscored the strategic importance of domestic capital markets to the company's capacity and technology ambitions.
2011
Combination of HHNEC and Grace ShanghaiM&ABackground
HHNEC and Grace Shanghai were separate foundry organizations with related manufacturing roles.
Action taken
They were merged to form Shanghai Huahong Grace Semiconductor Manufacturing Corporation.
Aftermath
The combination created a larger manufacturing platform that later operated within the Hua Hong Group structure.
2003
Transition from DRAM manufacturing to foundry servicesStrategyBackground
HHNEC had initially been established to manufacture DRAM for NEC.
Action taken
The company phased out DRAM production and adopted a pure-play foundry model.
Aftermath
The transition aligned HHNEC with the contract-manufacturing model that became central to Hua Hong's later business.
Recent events
Hua Hong Semiconductor launches 90nm ULL eFlash process platform[4]
Hua Hong Semiconductor announced the launch of a 90nm ultra-low-leakage embedded flash and EEPROM process platform for large-capacity microcontroller applications.
Reported
Huahong Semiconductor upgrades embedded non-volatile memory process platform[5]
Huahong Semiconductor announced an upgrade to its 95-nanometer SONOS embedded non-volatile memory process platform, reporting improved technical advantages and reliability.
Sources7 sources
- 1Hua Hong Semiconductor - Wikipediaen.wikipedia.org
- 2Hua Hong Semiconductor - Wikidatawikidata.org
- 3上海华虹 - Wikipediazh.wikipedia.org
- 4华虹半导体推出90纳米超低漏电嵌入式闪存工艺平台scoop.co.nz
- 5华虹半导体升级嵌入式非易失性存储器工艺平台finance.sina.com.cn
- 6华虹半导体最新推出90纳米超低漏电嵌入式闪存工艺平台 助力大容量MCU解决方案tech.sina.com.cn
- 7华虹半导体最新推出90纳米超低漏电嵌入式闪存工艺平台助力大容量MCU解决方案tech.sina.com.cn
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