Arizona AIChang Chun Arizona
By Arizona AI · Profile reviewed · 53 sourced facts
At a glance
Chang Chun Arizona is the first U.S. factory of Taiwan's Chang Chun Group: a chip-chemicals plant in Casa Grande, Arizona. Chang Chun Arizona makes high-purity hydrogen peroxide, TMAH photoresist developer and photoresist thinners for chip fabs, and Casa Grande's economic development director told the City Council in May 2026 that the plant is open and operating. Chang Chun's 2021 federal trade-zone filing says its Casa Grande trade zone was being set up in part to supply TSMC Arizona's trade zone in Phoenix.
Key facts
- Arizona locations (2)
- Casa Grande plant: 1500 W. Clayton Rd., Casa Grande, AZ 85193
- Chandler principal office address: 3133 W. Frye Rd., Suite 101, Chandler, AZ 85226
- Headquarters
- Taipei, Taiwan (parent company)
- Ownership
- Owned by Chang Chun Group
- Website
- cc-arizona.com
Sources: Chang Chun Arizona, Arizona Corporation Commission · Addresses open Google Maps in a new tab
Chang Chun Arizona: Key Developments
- Nov 26, 2025
TSMC names Chang Chun Petrochemical a 2025 Excellent Performance Award winner
TSMC's 2025 supplier awards named Chang Chun Petrochemical Co., Ltd., a core company of Chang Chun Arizona's parent group, for Excellent Production Support. The award is worldwide and does not mention Arizona. - Oct 20, 2022
Chang Chun Arizona breaks ground on $300 million chip chemicals plant in Casa Grande
Chang Chun Arizona broke ground on its first U.S. manufacturing facility in Casa Grande, a $300 million plant to make electronic-grade hydrogen peroxide, TMAH-based developers and plating solutions for chip fabs, expected to create over 200 jobs. - Dec 7, 2021
Chang Chun plans chemical plant on 84 acres in Casa Grande's Pinal County Technology Park
AZBEX reported that Chang Chun Petrochemical Group planned a plant, known as Project Discovery, on 84 acres in the Pinal County Technology Park, the park's second project, with a development agreement headed to the Casa Grande City Council. - Jun 7, 2021
Taiwan approves Chang Chun Petrochemical's US$90 million U.S. investment
Taiwan's Investment Commission approved Chang Chun Petrochemical's US$90 million investment to set up a U.S. holding company, Chang Chun Corporation, after the company said it would build a plant in Arizona to accompany TSMC. - Dec 7, 2020
Chang Chun Petrochemical says it will build a chip chemicals plant in Arizona
Chang Chun Petrochemical said it would set up a plant in Arizona, Taiwan's Central News Agency reported, to accompany TSMC, making ultra-pure hydrogen peroxide, TMAH developer, electronic-grade solvents and plating solutions.
How does Chang Chun Arizona fit into AI?
Modern AI runs on physical silicon, and that silicon passes through several hands before it ever answers a question. Here is the path, and where Chang Chun Arizona sits on it. Stages not marked below are shown for context and are not claims about Chang Chun Arizona.
- Chip design: Companies like Nvidia, Apple and AMD design the chips. Chip designers decide what a chip does and hand the blueprint to a factory. The three companies whose designs matter most to AI - Nvidia, Apple and AMD - do that work elsewhere, then send the designs to fabs. None of them owns a fab of its own.
- Wafer fabrication (here today): Fabs print billions of transistors onto silicon wafers. Chemicals for wafer fabs. A fab prints a design onto a polished disc of silicon called a wafer, layer by layer, until billions of transistors exist where there was blank material. It is the hardest and most expensive step in the chain, and the reason a single factory can cost tens of billions of dollars.
- Advanced packaging: Wafers are cut and assembled into finished chips. Packaging cuts a finished wafer into individual chips and assembles them, often stacking several pieces of silicon and memory into one component. For AI chips this step is nearly as demanding as fabrication, and a wafer is not a usable product until it is done.
- Servers and devices: Chips are built into AI servers, phones and PCs. Finished chips are assembled into the things people actually buy and deploy: data-center servers, phones, laptops. This is where a chip stops being a component and starts being a product.
- AI in use: Data centers and devices run AI models on that silicon. The end of the chain: models answering questions, generating images and driving software, running on the silicon every earlier step produced. Every AI service anyone uses is running on physical hardware somewhere, and that hardware started as a wafer.
Chang Chun Arizona: Wafer fabrication (here today)
- What the chemicals do (company-reported): Hydrogen peroxide cleans and etches wafer surfaces, and TMAH developer develops positive photoresist to define circuit patterns, by the company's description. Source: Chang Chun Arizona
- Built with TSMC's Phoenix plant in mind (company-reported): Its own 2021 federal trade-zone filing says its trade zone was being set up in part to supply TSMC Arizona's trade zone in Phoenix. Source: Chang Chun (Arizona) LLC, filed with the Foreign-Trade Zones Board
About Chang Chun Arizona
What Chang Chun Arizona does
Chang Chun Arizona makes the ultra-pure chemicals that chip factories use to clean wafers and print circuit patterns. It is a subsidiary of Chang Chun Group, a chemicals group headquartered in Taipei, Taiwan, and its Casa Grande plant is the group's very first manufacturing facility in the United States.
What it sells: the company lists three product lines and four services on its website:
- Hydrogen peroxide: ultra-low-metal grades for wafer cleaning, surface preparation and etching.
- TMAH developer: a metal-ion-free developer for positive photoresist, the light-sensitive coating used to print circuit patterns.
- Photoresist thinners: PGME, PGMEA and IPA-based thinners and edge-bead removers.
- Services: collecting and recycling spent TMAH, solvents and cleaning chemicals; bulk tanker delivery; on-site ISO tank storage; and engineering and construction of chemical recycling systems.
The parent: Chang Chun Group traces itself to a plastics factory three young graduates founded in 1949. Its core companies are Chang Chun Plastics, Chang Chun Petrochemical (1964) and Dairen Chemical (1979), with production bases in Taiwan, China, Malaysia, Indonesia and Singapore. The group reported about $8 billion in revenue in 2020 and calls itself Taiwan's biggest supplier of wet chemicals and lithography chemicals to chipmakers.
In Arizona
Where it is: the plant sits at 1500 W. Clayton Rd., Casa Grande, in the Pinal County Technology Park, near the northwest corner of Clayton and Burris roads along the Union Pacific rail line. It is the only Arizona site on the company's website.
How it got here: in December 2020 Chang Chun Petrochemical, one of the group's core companies, said it would build a plant in Arizona to accompany TSMC, Taiwan's Central News Agency reported. In June 2021 Taiwan's investment regulator approved its US$90 million investment in a U.S. holding company, Chang Chun Corporation. Chang Chun (Arizona) LLC bought its Casa Grande site for $5,227,200; the deed was recorded November 29, 2021.
Who owns it: state records show two Delaware companies, both registered in Arizona on March 5, 2021. Chang Chun (Arizona) LLC, whose registration describes its business as chemical manufacturing, lists one member: Chang Chun Corporation, a holding company whose own registration gives the Casa Grande plant as its place of business. That is the name of the U.S. holding company in which Taiwan approved Chang Chun Petrochemical's 2021 investment.
Two addresses on file: the company's own records give two Arizona addresses. Its website and its holding company's state record give the Casa Grande plant; the LLC's state registration lists its principal office at 3133 W. Frye Rd., Suite 101, Chandler, which is in a coworking center that rents private offices and virtual-office addresses. No map listing for Chang Chun appears there, and the company's website lists only Casa Grande.
The groundbreaking: on October 20, 2022, the company broke ground on a $300 million plant expected to create over 200 jobs, the Arizona Commerce Authority announced. The plan then was to be operational in 2023, supply wafer fabs from 2024 and be fully built out in 2025. Yu-hung (Calvin) Su was president of Chang Chun Arizona at the time.
How big it is: the company, its builder and the city have published different figures.
- 540,000 sq ft: the manufacturing facility on the company's website, the same figure Casa Grande city staff and the Phoenix Business Journal gave in 2022 for the facility being planned.
- 109,346 sq ft: the first-phase plant listed by Mortenson, which is delivering the plant in phases.
- 400,000-plus sq ft: the plant in the city's 2024 development agreement report.
- 79.9 acres: the site in the Pinal County Assessor's record, after the company gave land for Clayton Road and Burris Road in 2024. AZBEX and the Phoenix Business Journal reported about 84 acres before then; Mortenson describes an 80-acre site.
Is it running: yes. On May 4, 2026, Casa Grande's economic development director told the City Council that Chang Chun is "open and operating". The plant's state industrial stormwater permit took effect March 4, 2025, and EPA records show its first hazardous waste shipments in 2025, none in 2023 or 2024, with no violations or enforcement listed. Mortenson lists the first phase's completion as 2025, and the company's website says the facility "produces" its chemicals. The company posts its openings on Indeed, linked from its careers page.
City and federal approvals: in January 2022 the Casa Grande City Council backed a Foreign-Trade Zone subzone for the plant, as city staff described a 540,000-square-foot facility projected to create 209 full-time jobs, with more than $400 million in investment. The federal Foreign-Trade Zones Board cleared its production on April 8, 2022, and the city's Planning and Zoning Commission approved its conditional use permit and site plan on July 7, 2022.
A smaller first phase: in March 2024 Tom's Hardware, citing Nikkei, reported that Chang Chun had significantly reduced the scope of the Arizona plant and was building part of it on a smaller scale than first planned. In October 2024 the City Council adopted a development agreement, Ordinance No. 3445, which city staff described this way:
- Investment and jobs: an initial $210 million, a plant of more than 400,000 square feet, and 50 to 75 initial jobs, with plans to expand to 200.
- City terms: the city credits a quarter of the construction sales tax toward impact fees, supports the Foreign-Trade Zone and improves Clayton and Burris roads; the company gives the road land at no cost.
- Deadlines: the first building within 12 months and opening for business within 18 months, subject to force majeure.
Chang Chun is not listed in the Commerce Authority's 2024 or 2025 Qualified Facility tax credit reports.
Role in AI and chips
Chang Chun Arizona makes no chips. It supplies wet chemicals that wafer fabs use: hydrogen peroxide for cleaning between process steps and TMAH developer for lithography, the step that prints each layer's circuit pattern. Those steps are repeated many times in making any advanced chip, including the processors that train and run AI.
The TSMC connection: in its own December 2021 filing with the federal Foreign-Trade Zones Board, Chang Chun (Arizona) LLC said its trade zone was being set up "in part to supply the TSMC Arizona Corporation subzone in Phoenix", with transfers planned between the two zones. Mortenson also says the plant will produce wafer-making chemicals to support TSMC's new Phoenix plant, and Casa Grande's mayor said at the groundbreaking that it would support the new TSMC facility. In Taiwan, TSMC gave Chang Chun Petrochemical a 2025 Excellent Performance Award for production support, a worldwide award that does not mention Arizona. At the city's July 2022 planning hearing, a speaker for the project told commissioners "The product will be sent up to TSMC".
A track record in the chemical: the group built its first electronic-grade hydrogen peroxide plant in Miaoli, Taiwan, in 1994 and says it is now Taiwan's largest maker of high-purity hydrogen peroxide. In May 2023 Wealth Magazine described Arizona as the group's seventh electronic-chemicals site, after three in Taiwan and three in China, with production then expected in 2024.
Chang Chun Arizona: By the Numbers
Each figure is dated and linked to its source. Figures that are company-reported, announced, or projected rather than measured are labeled.
- Investment announced for the Casa Grande plant (2022): $300 million (announced)
- Jobs planned when it broke ground (2022): More than 200 (projected)
- Manufacturing facility, as the company states it: 540,000 sq ft (company-reported)
- First-phase plant, as its builder lists it: 109,346 sq ft
- What the plant makes: High-purity hydrogen peroxide, TMAH photoresist developer and photoresist thinners for chip fabs (company-reported)
- Chang Chun Group's first U.S. manufacturing plant: Yes; the Taiwan group's first factory in the United States (company-reported)
The Arizona build-out, 1949 to 2026
- 1949: Chang Chun Group founded in Taiwan
- 1994: Group's first electronic-grade hydrogen peroxide plant (Miaoli, Taiwan)
- 2020: Chang Chun Petrochemical says it will build in Arizona
- 2021: Bought its Casa Grande site
- 2021: Registered to do business in Arizona
- 2021: Taiwan approves a US$90 million U.S. holding company
- 2022: City approves its conditional use permit and site plan
- 2022: Broke ground in Casa Grande
- 2022: Cleared to produce in a Foreign-Trade Zone
- 2024: Development agreement with Casa Grande adopted
- 2025: State industrial stormwater permit takes effect
- 2025: First phase of the plant completed, per its builder
- 2026: City says the plant is open and operating
Chang Chun Arizona Casa Grande plant
| Measure | Value | As of | Basis | Source |
|---|---|---|---|---|
| Address | 1500 W. Clayton Rd., Casa Grande, AZ 85193 | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| What it makes | High-purity chemicals for chip fabs: hydrogen peroxide for wafer cleaning, TMAH photoresist developer and photoresist thinners | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| Where it sits | Near the northwest corner of Clayton and Burris roads, along the Union Pacific rail line, in the Pinal County Technology Park | 2022-10-21 | verified | Phoenix Business Journal (Rose Law Group Reporter excerpt) |
| Site size | 79.9 acres | 2026-10-31 | verified | Pinal County Assessor |
| Manufacturing facility (company figure) | 540,000 sq ft | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| First-phase plant (builder's figure) | 109,346 sq ft | 2026-10-31 | verified | Mortenson (the plant's builder) |
| Builder | Mortenson, as construction manager at risk; ground broken October 2022 | 2026-10-31 | verified | Mortenson (the plant's builder) |
| Status | Producing, in the company's words; the builder lists the first phase's completion as 2025 | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
Chang Chun Arizona Chandler principal office address
| Measure | Value | As of | Basis | Source |
|---|---|---|---|---|
| Address | 3133 W. Frye Rd., Suite 101, Chandler, AZ 85226 | 2026-10-31 | company-reported From the company's own published information. | Arizona Corporation Commission |
Facilities
| Measure | Value | As of | Basis | Source |
|---|---|---|---|---|
| Plant size in the city development agreement (2024) | More than 400,000 sq ft | 2024-09-16 | announced From a public announcement. Plans can change. | City of Casa Grande |
| Bought its Casa Grande site | November 2021 | 2021-11-29 | verified | Pinal County Recorder |
| City approves its conditional use permit and site plan | July 7, 2022 | 2022-07-07 | verified | City of Casa Grande |
| Broke ground in Casa Grande | October 20, 2022 | 2022-10-20 | verified | Arizona Commerce Authority |
| State industrial stormwater permit takes effect | March 4, 2025 | 2026-10-29 | verified | Arizona Department of Environmental Quality |
| First phase of the plant completed, per its builder | 2025 | 2026-10-31 | verified | Mortenson (the plant's builder) |
| Arizona as the group's seventh electronic-chemicals site | The seventh, after Dafa, Miaoli and Changbin in Taiwan and Changshu, Yangzhou and Zhangzhou in China; production was then expected in 2024 | 2023-05-23 | projected A forward-looking estimate, not a measured result. | Business Today (今周刊), reprinting Wealth Magazine (財訊) |
Investment
| Measure | Value | As of | Basis | Source |
|---|---|---|---|---|
| Price reported for the site (2021) | $5.2 million | 2021-12-17 | verified | AZBEX |
| Investment described by Casa Grande city staff (2022) | More than $400 million | 2022-01-18 | announced From a public announcement. Plans can change. | City of Casa Grande |
| Initial investment in the city development agreement (2024) | $210 million | 2024-09-16 | announced From a public announcement. Plans can change. | City of Casa Grande |
| Taiwan approves a US$90 million U.S. holding company | June 7, 2021 | 2021-06-07 | verified | Central News Agency (Taiwan), via Newtalk |
| Development agreement with Casa Grande adopted | October 7, 2024 | 2024-10-07 | verified | City of Casa Grande |
| Group revenue, worldwide (2020) | About $8 billion | 2020-12-31 | company-reported From the company's own published information. | Arizona Commerce Authority |
Workforce
| Measure | Value | As of | Basis | Source |
|---|---|---|---|---|
| Jobs in the city development agreement (2024) | 50 to 75 at first, with plans to expand to 200 | 2024-09-16 | projected A forward-looking estimate, not a measured result. | City of Casa Grande |
Production
| Measure | Value | As of | Basis | Source |
|---|---|---|---|---|
| Group's first electronic-grade hydrogen peroxide plant (Miaoli, Taiwan) | 1994 | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| Products named at the groundbreaking (2022) | Electronic-grade hydrogen peroxide, TMAH-based developers, electronic-grade solution and plating solution | 2022-10-20 | announced From a public announcement. Plans can change. | Arizona Commerce Authority |
| Products the company lists | TMAH developer for positive photoresist; PGME, PGMEA and IPA-based photoresist thinners and edge-bead removers; ultra-low-metal hydrogen peroxide | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| Services the company lists | Collecting and recycling spent TMAH, solvents and cleaning chemicals; bulk tanker delivery; on-site ISO tank storage; engineering and construction of chemical recycling systems | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| Built to support TSMC's Phoenix plant, per its builder | Mortenson says the plant will produce chemicals for wafer manufacturing to support TSMC's Phoenix plant | 2026-10-31 | verified | Mortenson (the plant's builder) |
| Stated purpose in its federal trade-zone filing (2021) | In part to supply TSMC Arizona's trade zone in Phoenix | 2021-12-09 | company-reported From the company's own published information. | Chang Chun (Arizona) LLC, filed with the Foreign-Trade Zones Board |
| Group's place in high-purity hydrogen peroxide | Taiwan's largest maker of high-purity hydrogen peroxide, in its own words | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| TSMC supplier award to Chang Chun Petrochemical (2025, worldwide) | Excellent Production Support | 2025-11-26 | verified | TSMC |
Other
| Measure | Value | As of | Basis | Source |
|---|---|---|---|---|
| Chang Chun Group founded in Taiwan | 1949 | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Group |
| Plan announced at the groundbreaking (2022) | Operational in 2023, supplying wafer fabs from 2024, fully built out in 2025, with room to expand | 2022-10-20 | projected A forward-looking estimate, not a measured result. | Arizona Commerce Authority |
| Chang Chun Petrochemical says it will build in Arizona | December 7, 2020 | 2020-12-07 | verified | Central News Agency (Taiwan) |
| Registered to do business in Arizona | March 5, 2021 | 2026-10-31 | verified | Arizona Corporation Commission |
| Cleared to produce in a Foreign-Trade Zone | April 8, 2022 | 2022-04-13 | verified | Federal Register (Foreign-Trade Zones Board) |
| President of Chang Chun Arizona (2022) | Yu-hung (Calvin) Su | 2022-10-20 | company-reported From the company's own published information. | Arizona Commerce Authority |
| City says the plant is open and operating | May 4, 2026 | 2026-05-04 | verified | City of Casa Grande |
| Parent | Chang Chun Group, headquartered in Taipei, Taiwan | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Arizona |
| Group's core companies (worldwide) | Chang Chun Plastics (1949), Chang Chun Petrochemical (1964) and Dairen Chemical (1979), plus dozens of affiliates | 2026-10-31 | company-reported From the company's own published information. | Chang Chun Group |
| Group's place in Taiwan's chip chemicals market | Taiwan's biggest supplier of wet chemicals and lithography chemicals to chipmakers, in its own words | 2022-10-20 | company-reported From the company's own published information. | Arizona Commerce Authority |
| Arizona operating company | Chang Chun (Arizona) LLC, a Delaware limited liability company registered in Arizona on March 5, 2021 | 2026-10-31 | verified | Arizona Corporation Commission |
| Member of the LLC | Chang Chun Corporation | 2026-10-31 | verified | Arizona Corporation Commission |
| U.S. holding company | Chang Chun Corporation, a Delaware corporation registered in Arizona on March 5, 2021, whose known place of business is the Casa Grande plant | 2026-10-31 | verified | Arizona Corporation Commission |
| EPA compliance record | No violations, inspections or enforcement listed | 2026-10-23 | verified | U.S. EPA (ECHO) |
Sources
- Chang Chun Arizona: Chang Chun Arizona | High-Purity Electronic Chemicals for Semiconductors
- Arizona Corporation Commission, 2022: Business record: CHANG CHUN (ARIZONA) LLC, Business ID 23192522
- Phoenix Business Journal (Rose Law Group Reporter excerpt), 2022: Construction starts on chip supplier plant in Casa Grande
- City of Casa Grande, 2024: Minutes of the Regular Meeting of the Mayor and Council, September 16, 2024
- Mortenson (the plant's builder): Project Discovery - Chang Chun Petrochemical Arizona
- Pinal County Assessor: Parcel 503-35-006G
- Pinal County Recorder, 2021: Special Warranty Deed, fee no. 2021-149871
- City of Casa Grande, 2022: Planning and Zoning Commission Statement of Legal Action, July 7, 2022
- Arizona Commerce Authority, 2022: Chang Chun Arizona Breaks Ground On Manufacturing Facility In Casa Grande
- Arizona Department of Environmental Quality: Permits for place 230567, CHANG CHUN ARIZONA, 1500 W Clayton Rd
- Business Today (今周刊), reprinting Wealth Magazine (財訊), 2023: 長春集團打造台積3奈米「電子級化學品重鎮」 (Chang Chun Group builds an electronic-chemicals base for TSMC's 3nm)
- Chang Chun Group: Chang Chun Group-Profile
- Central News Agency (Taiwan), 2020: 跟隨台積電赴美設廠 長春石化：不影響現有客戶 (Following TSMC to build in the U.S., Chang Chun Petrochemical: existing customers not affected)
- Federal Register (Foreign-Trade Zones Board), 2022: Foreign-Trade Zone (FTZ) 75, Phoenix, Arizona, Authorization of Production Activity, Chang Chun (Arizona) LLC (Specialty Chemicals for Microchip Production), Casa Grande, Arizona
- Chang Chun Arizona: About | Chang Chun Arizona
- City of Casa Grande, 2026: Minutes of the Regular Meeting of the Mayor and Council, May 4, 2026
- Arizona Corporation Commission: Business record: CHANG CHUN CORPORATION, Business ID 23192520
- U.S. EPA (ECHO): Detailed Facility Report: CHANG CHUN ARIZONA, 1500 W Clayton Rd, Casa Grande
- AZBEX, 2021: TSMC Economic Development Impact Rippling to Pinal
- City of Casa Grande, 2022: Minutes of the Regular Meeting of the Mayor and Council, January 18, 2022
- Central News Agency (Taiwan), via Newtalk, 2021: 長春石化9千萬美元赴美投資 投審會核准 (Chang Chun Petrochemical's US$90 million U.S. investment approved)
- City of Casa Grande, 2024: Minutes of the Regular Meeting of the Mayor and Council, October 7, 2024
- Chang Chun (Arizona) LLC, filed with the Foreign-Trade Zones Board, 2021: Notification Requesting FTZ Production Authority, Chang Chun (Arizona) LLC, docket B-81-2021
- TSMC, 2025: TSMC 2025 Supply Chain Management Forum Presents Awards to Outstanding Suppliers
Chang Chun Arizona Jobs in Arizona (0 open)
Chang Chun Arizona: Common Questions
- How many jobs does Chang Chun Arizona have open in Arizona right now?
Arizona AI is not tracking any open Chang Chun Arizona roles in Arizona at the moment. Listings refresh automatically twice a day.
- How do I apply for a job at Chang Chun Arizona?
Arizona AI does not currently read an online jobs board for Chang Chun Arizona, so openings are best checked on the company's own website. Arizona AI does not collect applications or charge job seekers.
- Where is Chang Chun Arizona located?
Chang Chun Arizona's plant is at 1500 W. Clayton Rd., Casa Grande, AZ 85193, in the Pinal County Technology Park near the northwest corner of Clayton and Burris roads, along the Union Pacific rail line. It is the only Arizona site on the company's website. The company's state registration, under Chang Chun (Arizona) LLC, also lists a principal office at a coworking center in Chandler, 3133 W. Frye Rd., Suite 101, where Arizona AI found no Chang Chun office. Chang Chun Arizona's parent group is headquartered in Taipei, Taiwan.
- What does Chang Chun Arizona make?
High-purity chemicals for chip factories. Its website lists ultra-low-metal hydrogen peroxide for wafer cleaning and etching, a metal-ion-free TMAH developer for photoresist, and PGME, PGMEA and IPA-based photoresist thinners. It also offers recycling of spent chemicals, tanker delivery and on-site tank storage for fabs.
- Is the Chang Chun plant in Casa Grande operating?
Yes. On May 4, 2026, Casa Grande's economic development director told the City Council that Chang Chun is "open and operating". Its state industrial stormwater permit took effect March 4, 2025, EPA records show its first hazardous waste shipments in 2025, and its builder, Mortenson, lists the first phase's completion as 2025. When it broke ground in October 2022, the plan was to be operational in 2023 and to supply wafer fabs from 2024.
- Does Chang Chun Arizona supply TSMC?
In its December 2021 filing with the federal Foreign-Trade Zones Board, Chang Chun (Arizona) LLC said its trade zone was being set up in part to supply TSMC Arizona's trade zone in Phoenix. Its builder says the plant will produce wafer-making chemicals in support of TSMC's Phoenix plant, and Chang Chun Petrochemical said in December 2020 that it would build in Arizona to accompany TSMC. In Taiwan, TSMC named Chang Chun Petrochemical a 2025 Excellent Performance Award winner for production support. At the city's July 2022 planning hearing, a speaker for the project said the product would be sent to TSMC's chip plant in north Phoenix.
- How much did Chang Chun invest in Arizona?
The October 2022 groundbreaking announcement put the plant at a $300 million investment expected to create over 200 jobs. Casa Grande city staff described more than $400 million in January 2022 and, in the October 2024 development agreement, an initial $210 million with 50 to 75 initial jobs and plans to expand to 200. Separately, Taiwan approved Chang Chun Petrochemical's US$90 million investment in a U.S. holding company in June 2021, and the company paid $5,227,200 for its Casa Grande land, its deed shows.
- How big is the Chang Chun Arizona plant?
The company's website gives a 540,000-square-foot manufacturing facility. Its builder, Mortenson, lists the first-phase plant at 109,346 square feet on an 80-acre site and is delivering the plant in phases; press reports in 2021 and 2022 put the site at about 84 acres.
- Who owns Chang Chun Arizona?
Chang Chun (Arizona) LLC owns the plant's site, its Pinal County deed shows. State records show it is a Delaware company registered in Arizona on March 5, 2021 that lists one member, Chang Chun Corporation, a Delaware holding company that gives the Casa Grande plant as its place of business. In June 2021 Taiwan approved Chang Chun Petrochemical's US$90 million investment in a U.S. holding company of that name. Chang Chun Petrochemical is a core company of Chang Chun Group, the Taiwanese chemicals group founded in 1949 that the company's website names as its parent.