Chaozhou Three-Circle

Chaozhou Three-Circle, commonly known as CCTC, is a Chinese electronic-components and advanced-materials company headquartered in Chaozhou, Guangdong. Established in 1970 as a state-owned enterprise, it was originally created to manufacture ceramic substrates and resistors. Over time, the company developed from a traditional ceramic-component producer into a diversified supplier of electronic ceramics, precision components, packaging materials, and specialized manufacturing equipment. A major phase of CCTC's industrial development began in 1984, when it adopted overseas equipment to automate production. By the end of the 1990s, the company had become one of the world's largest manufacturers of ceramic substrates and resistors. In 1992, it was reorganized as a private joint-stock company. Zhang Wanzhen, who had joined the business as a teenager after junior high school, became chairman after the restructuring. The change provided a corporate framework for later investment in research, equipment, and new application areas. CCTC broadened its technical scope during the 1990s and 2000s. In 1996, it began investing in alumina substrates used in integrated-circuit resistors. Research and development in 2001 produced additional components for integrated circuits, while the expansion of the Internet created opportunities in ceramic components for optical communications. In 2004, the company entered the new-energy field by developing materials for solid oxide fuel cells. Beginning in 2005, it also developed specialized production equipment internally, reducing dependence on overseas machinery and building capabilities that supported more controlled, automated manufacturing. In 2008, CCTC entered the integrated-circuit packaging market. The company became publicly listed on the Shenzhen Stock Exchange on 3 December 2014 through an initial public offering. Its product portfolio includes electronic ceramic materials and components, alumina substrates, integrated-circuit packaging materials, optical-communications components, mobile-phone ceramic accessories, and exterior parts for wearable devices. CCTC has also produced durable ceramic rear covers for mobile phones and has been described as a core supplier to Xiaomi, while supplying or serving other major smartphone brands including Huawei, Oppo, Vivo, and OnePlus. Other named customers or business partners include Bloom Energy, Amphenol, and Vishay Intertechnology. CCTC's business is positioned around materials engineering, ceramic processing, component miniaturization, production automation, and high-volume manufacturing for technology industries. Its applications span consumer electronics, telecommunications, integrated circuits, new energy, and industrial electronic components. In 2022, it was reported as the ninth-largest recipient among China's ten largest chip-subsidy recipients, receiving 213 million yuan in subsidies. In 2025, Frost & Sullivan ranked it as the world's seventh-largest supplier of electronic ceramic materials and components. The company therefore combines a domestic manufacturing base with participation in international electronics supply chains. CCTC has also faced scrutiny connected with alleged industrial espionage. In 2020, Japanese authorities accused a researcher of providing Sekisui Chemical production information concerning conductive particles used in touchscreens after alleged contact with CCTC. The company did not publicly comment on the case in the cited material. The episode illustrates the sensitivity of the advanced-materials and electronic-component sectors in which CCTC operates. CCTC remains an active listed Chinese technology-manufacturing company, although detailed information on its current leadership, official website, ownership structure, and future corporate transactions requires verification from current company and exchange filings.

Chaozhou Three-Circle was established in 1970 in Chaozhou, Guangdong, as a state-owned enterprise focused on ceramic substrates and resistors. Its early identity was rooted in electronic ceramics, a field requiring controlled material composition, precision forming, and reliable high-volume firing and finishing processes. In 1984, the company began using overseas equipment to automate manufacturing. Automation helped it increase output and consistency and supported its later expansion. By the end of the 1990s, CCTC had become the world's largest manufacturer of ceramic substrates and resistors according to the cited reference material. The company underwent a major organizational change in 1992, when it was restructured as a private joint-stock company. Zhang Wanzhen, who had joined the company at the age of 16 after completing junior high school, became chairman of the newly restructured enterprise. The reorganization created a platform for investment in product development and commercial growth. CCTC entered additional technical fields during the 1990s and 2000s. In 1996, it began investing in alumina substrates for integrated-circuit resistors. In 2001, research and development produced new products for integrated-circuit components. At approximately the same time, growth in Internet infrastructure opened a market for ceramic components used in optical communications. In 2004, CCTC began developing materials for solid oxide fuel cells, extending its ceramic expertise into the new-energy sector. In 2005, the company began developing specialized production equipment of its own. This effort helped it work around restrictions associated with overseas equipment and supported greater control over manufacturing processes. In 2008, CCTC entered integrated-circuit packaging by manufacturing related materials. These steps shifted the company from a narrower substrate-and-resistor business toward a broader advanced-materials and electronic-components portfolio. CCTC completed its initial public offering on 3 December 2014 and became listed on the Shenzhen Stock Exchange. The offering was reported to have raised US$216 million. Its later product scope included electronic ceramics, integrated-circuit materials, optical-communications components, smartphone ceramic accessories, and exterior parts for wearable devices. In consumer electronics, it produced ceramic rear covers described as durable and was identified as a core supplier to Xiaomi, with other reported customers or supplied brands including Huawei, Oppo, Vivo, and OnePlus. The cited material also names Bloom Energy, Amphenol, and Vishay Intertechnology among its customers. On 12 October 2020, Xi Jinping inspected CCTC during a Guangdong tour. The company was also connected to an industrial-espionage investigation reported in October 2020. Japanese authorities accused a researcher of disclosing Sekisui Chemical information about conductive particles used in touchscreens after alleged contact with CCTC. The researcher was said to have copied information and sent it to CCTC; CCTC did not comment in the cited account. In 2022, CCTC was identified as the ninth-largest recipient among China's ten largest chip-subsidy recipients, with reported subsidies of 213 million yuan. In 2025, Frost & Sullivan ranked it seventh globally among suppliers of electronic ceramic materials and components. The reference material further reports a Hong Kong secondary listing in July 2026, but that future-dated corporate event requires confirmation from official exchange records.

• 2025

  Global electronic-ceramics ranking

  [1]Chaozhou Three-Circleen.wikipedia.org

  Frost & Sullivan ranked CCTC seventh globally among suppliers of electronic ceramic materials and components.

• 2020

  Presidential inspection

  [1]Chaozhou Three-Circleen.wikipedia.org

  Xi Jinping inspected the company during a tour of Guangdong on 12 October.

• 2014

  Shenzhen Stock Exchange listing

  [1]Chaozhou Three-Circleen.wikipedia.org

  CCTC completed its initial public offering on 3 December and became a Shenzhen-listed company.

• 2008

  Entry into integrated-circuit packaging

  [1]Chaozhou Three-Circleen.wikipedia.org

  The company entered the integrated-circuit packaging market and began manufacturing related materials.

• 2005

  In-house equipment development

  [1]Chaozhou Three-Circleen.wikipedia.org

  CCTC began developing specialized manufacturing equipment internally.

• 2004

  Entry into solid oxide fuel-cell materials

  [1]Chaozhou Three-Circleen.wikipedia.org

  CCTC entered the new-energy field by developing materials for solid oxide fuel cells.

• 2001

  Integrated-circuit and optical-communications development

  [1]Chaozhou Three-Circleen.wikipedia.org

  The company developed additional integrated-circuit components and began producing ceramic components for optical communications.

• 1996

  Expansion into alumina substrates

  [1]Chaozhou Three-Circleen.wikipedia.org

  CCTC began investing in alumina substrates for integrated-circuit resistors.

• 1992

  Joint-stock restructuring

  [1]Chaozhou Three-Circleen.wikipedia.org

  CCTC was restructured as a private joint-stock company, with Zhang Wanzhen becoming chairman.

• 1984

  Manufacturing automation begins

  [1]Chaozhou Three-Circleen.wikipedia.org

  The company began adopting overseas equipment to automate production.

• 1970

  Company established

  [1]Chaozhou Three-Circleen.wikipedia.org

  CCTC was founded as a state-owned enterprise to manufacture ceramic substrates and resistors.

An advanced-materials and electronic-ceramics supplier serving high-volume technology manufacturing, with capabilities spanning ceramic processing, precision components, integrated-circuit packaging, optical communications, consumer-electronics accessories, and selected new-energy applications.

• Electronic ceramics · 1970

  Ceramic substrates and resistors

  These were among CCTC's original products and formed the foundation of its manufacturing business. Ceramic substrates provide electrically functional and mechanically stable bases for electronic components, while resistor products support circuit-control applications. The company expanded production through automation and later developed alumina-substrate variants for integrated-circuit resistor applications.

• Semiconductor materials · 2001

  Integrated-circuit components and packaging materials

  CCTC developed additional materials and components for integrated circuits beginning in the early 2000s and entered integrated-circuit packaging in 2008. These products extend the company's ceramic expertise into semiconductor assembly and packaging, where dimensional control, thermal performance, insulation, and process reliability are important.

• Communications components · 2001

  Optical-communications ceramic components

  The company began producing ceramic components for optical communications as Internet infrastructure expanded. These components are part of the precision materials and packaging ecosystem used in communications hardware, linking CCTC's ceramic-processing capabilities with telecommunications equipment demand.

• Consumer-electronics components

  Mobile-phone ceramic rear covers

  CCTC manufactures ceramic rear covers and related accessories for mobile phones. The covers are described as highly durable and place the company in the supply chain for premium or design-oriented smartphones. Xiaomi has been identified as a core customer, with Huawei, Oppo, Vivo, and OnePlus also named in the reference material.

• Consumer-electronics components

  Wearable-device ceramic exteriors

  CCTC produces ceramic exterior parts for wearable technology. These products apply advanced ceramic processing to visible and protective device surfaces, where durability, finish, dimensional accuracy, and compatibility with compact electronics are relevant requirements.

• New-energy materials · 2004

  Solid oxide fuel-cell materials

  CCTC entered the new-energy market in 2004 by developing materials for solid oxide fuel cells. The cited material does not specify the exact product formats or present commercial scale, but the activity demonstrates the company's effort to extend electronic-ceramics expertise into energy-conversion technologies.

• Industrial equipment · 2005

  Specialized manufacturing equipment

  Beginning in 2005, CCTC developed specialized equipment for its own production processes. Internal equipment development was intended to reduce reliance on overseas machinery and improve control over manufacturing technology, automation, and process customization.

• 2020

  Alleged industrial espionage involving Sekisui Chemical technology

  Japanese authorities accused a 45-year-old researcher of disclosing Sekisui Chemical information concerning conductive particles used in touchscreen production to CCTC. The allegations involved alleged contact initiated through LinkedIn, travel to China, a proposed technology exchange, and the copying and transmission of company information. The researcher had reportedly been dismissed after an internal investigation. CCTC made no comment in the cited account, and the material does not establish a final judicial outcome against the company.

  Source

Read more

• 2026

  Reported Hong Kong secondary listingM&A

  Background

  The reference material reports a later expansion of CCTC's public-market presence.

  Action taken

  CCTC reportedly held a secondary listing on the Hong Kong Stock Exchange in July 2026.

  Aftermath

  The reported transaction requires verification against official Hong Kong and company records.

  Source

• 2014

  Complete initial public offeringOther

  Background

  After decades of expansion and organizational development, CCTC sought access to public capital markets.

  Action taken

  CCTC listed on the Shenzhen Stock Exchange on 3 December 2014.

  Aftermath

  The IPO reportedly raised US$216 million and made CCTC a publicly traded company.

  IPO proceeds. US$216 million raised (3 December 2014)

  Source

• 2008

  Enter integrated-circuit packagingStrategy

  Background

  CCTC sought to apply its ceramic-materials capabilities to semiconductor manufacturing and packaging.

  Action taken

  The company entered the integrated-circuit packaging market and began producing related materials.

  Aftermath

  This broadened CCTC's portfolio beyond substrates and resistors into semiconductor supply-chain applications.

  Source

• 2005

  Develop specialized equipment internallyStrategy

  Background

  Restrictions and dependence associated with overseas production equipment created a need for greater manufacturing autonomy.

  Action taken

  CCTC began developing its own specialized production equipment.

  Aftermath

  The move strengthened the company's control over production technology and supported its advanced-ceramics manufacturing model.

  Source

• 1992

  Restructure as a private joint-stock companyStrategy

  Background

  The former state-owned enterprise required a corporate structure suited to broader investment and commercial development.

  Action taken

  CCTC was reorganized as a private joint-stock company, and Zhang Wanzhen became chairman.

  Aftermath

  The restructuring preceded expansion into integrated-circuit materials, optical communications, new energy, packaging, and proprietary equipment.

  Source

• 1984

  Automate ceramic-component manufacturingStrategy

  Background

  CCTC sought to expand production and improve manufacturing consistency as demand for ceramic substrates and resistors grew.

  Action taken

  The company began using overseas equipment to automate production.

  Aftermath

  By the end of the 1990s, CCTC had become the world's largest manufacturer of ceramic substrates and resistors according to the cited reference.

  Source

1. 1Chaozhou Three-Circleen.wikipedia.org