Hana Micron Brand Guidelines: Asan’s 2001 Chip Packager & Its Vietnam and Brazil Plants

A packager in Korea’s chip back-end town.

Hana Micron — 하나마이크론 in Korean, and written HANA Micron in some of its own material — is a South Korean company that packages and tests chips for other firms. The Korean business site Dealsite reported in September 2022 that it was founded in August 2001 and listed on the KOSDAQ market in 2005; English Wikipedia also gives 2001 as its founding year and Asan as its headquarters.

Asan, which absorbed the old spa town of Onyang, is a centre of Korea’s chip back-end work. In September 2005 the Korean daily Electronic Times (etnews) visited the company there and described Onyang as a place where Samsung Electronics’ back-end chip plant and related suppliers drive the local economy. It reported that Hana Micron, founded in 2001 and then led by Choi Chang-ho, had been named a top partner by both Samsung Electronics and Hynix two years running, had completed a second plant in June 2005, and had run packaging and testing as one integrated line since 2003. Korean Wikipedia says the company began in August 2001 when about 60 staff from the packaging operation of Samsung Electronics’ chip division were spun off under Choi; the Investor, a Vietnamese business site, named Choi Chang Ho as chairman in 2023.

The 2005 report also found Hana Micron selling USB drives and MP3 players under its own brand and researching OLED driver chips. English Wikipedia says it set up Hana Silicon in 2007 to make silicon cathode rings and other consumable parts used in chip etching, and in 2008 formed Hana Micron America and Hana Innosys, the latter working on system-integration projects such as RFID animal tracing.

In 2025 the company tried to reorganise. Bizwatch reported in July 2025 that it had planned to split into a holding company, to be named Hana Semiconductor Holdings, and an operating company keeping the Hana Micron name. Shareholders approved the split plan on 16 July 2025, but some shareholders then applied for an injunction; a court granted it on 28 July 2025, and the next day the company withdrew the split and all related procedures.

Korea, Vietnam and Brazil.

English Wikipedia says Hana Micron’s factories are in South Korea, Vietnam and Brazil. Korean Wikipedia lists flip-chip, wafer-level and multichip packages among its products, and names its consolidated subsidiaries as including Hana Materials, Hana WLS for bumping and test, two Vietnamese companies — Hana Micron Vietnam and Hana Micron Vina — HT Micron in Brazil, and Hana Electronics for modules.

Much of its recent growth has come from Vietnam. Dealsite reported in September 2022 that Hana Micron Vina, wholly owned by the parent, had agreed a strategic partnership with SK hynix running to 2027 to do the full chain for SK hynix memory products — packaging, package testing, module assembly and module testing — in what the industry calls a “full turnkey” arrangement, with volume production starting in October 2022. On 16 September 2023 Hana Micron Vina inaugurated its second factory in Bac Giang province, in the Van Trung industrial park, according to the Investor, which called it the first semiconductor plant of its kind in northern Vietnam; the first Bac Giang factory had come into operation in 2022. Choi said at the opening that the Vietnamese operation would become the group’s largest production site and that Vietnamese staff would make up 70% of its workforce. VnExpress reported in October 2023 that the second plant covered six hectares and that the company was partnering with the Vietnam-Korea Industrial Technical College on training.

Its Brazilian arm, HT Micron, began as a joint venture. O Estado de S. Paulo, in a January 2012 report republished by the Unisinos university news service, described HT Micron as a joint venture between the Brazilian holding company Parit and Hana Micron, based in São Leopoldo in Greater Porto Alegre and building a home in the university’s Tecnosinos technology park. It packaged chips — the final stage of production — from imported wafers, with the technology coming from the Korean partner. Korean Wikipedia dates the joint venture to 2009. Dealsite reported in August 2025 that the Brazilian business buys wafers from Samsung Electronics and SK hynix and sells finished products under its own brand.

Design and documentation.

Chip packaging and test companies sit between the chipmaker and the finished device. The trade calls them OSATs, for outsourced semiconductor assembly and test: they take silicon made by others, mount it, connect it, seal it and check that it works. Their customers are other technology companies, so they rarely speak to the public, and their imagery is built for engineers, buyers and investors.

That imagery leans on close-ups. Company pages and annual reports return again and again to macro shots of packaged chips and the substrates beneath them, to fine arcs of gold or copper wire bonds linking a die to its frame, and to wafers catching the light. Methods carry the names that a consumer brand would give to products: flip chip, fan-out, system in package, 2.5D and chiplet packaging.

The second register is the factory. Rows of test handlers, operators in white cleanroom suits, and long, low factory campuses in places such as Kaohsiung, Penang and Jiangsu stand for scale and reliability. Plants are often known by codes and numbers rather than names, and maps of sites across Asia, Europe and the Americas do much of the storytelling. Trade shows such as SEMICON are where these companies meet their customers face to face.

This guide sets out what can be checked about each company — who founded it, who owns it, where it works and what its record shows — and marks clearly what rests only on the company’s own word. The palettes and type here are our own interpretation, not the companies’ marks.

One name across three countries.

Hana, written 하나 in Korean, is the native Korean word for “one,” and the company carries the same prefix through its family of businesses: Hana Materials, Hana WLS, Hana Micron Vina, Hana Electronics. The Brazilian company, HT Micron, is the exception.

Its record is spread across several languages. Korean business and trade papers such as Dealsite, Bizwatch and etnews report its results, its customer contracts and its 2025 restructuring attempt; Vietnamese outlets cover its Bac Giang plants; Brazilian reporting covers HT Micron’s early years. Statements about its own rankings and capabilities on its website are the company’s own.

For a design guide, Hana Micron shows how one short native word can carry a group of companies across Korea, Vietnam and Brazil. Compare Samsung, whose chip back-end plant shares the Asan area, and ChipMOS, a Taiwanese assembly and test house that also packages and tests memory chips. For this guide we use a deep teal and a copper with a sans, an unofficial interpretation; no product or logo is reproduced.

Keep Hana Micron’s identity on hand — save it to a board in the Made Good inspiration library.