List of companies of Haesan

Haesan has a large, diversified economy with firms spanning many industries. Due to relaxed antitrust regulations in the nation, many of the nation's largest firms operate as conglomerates. Many companies also operate as Y.H.C., roughly the equivalent of limited liability corporations in other nations. Y.C. is a rarer limited liability corporation type more akin to a joint stock company, typically afforded significant tax benefits by the government due to its strategically important work.

Largest firms

Corporation	Ticker	Headquarters	2025 Revenues (£ SCT, millions)	Industry	Notes
The Seollim Group, Y.H.C.	SSE: S	Seowon	£253,552	Conglomerate, Electronics, Automotive, Finance	The Seollim Group is a conglomerate and a Y.H.C. most well known for its consumer electronics and smartphone production managed by its largest subsidiary Seollim Electronics. By some metrics, Seollim is the largest smartphone manufacturer in the IDU. Seollim also had subsidiaries which manufacture automobiles (Seollim Auto), in insurance (Seollim Financial), and entertainment (Seollim Arts). The group also controls large stakes in several prominent media and consumer goods companies.
Suri, Inc.	SSE: SURI	Sinju	£134,172	Conglomerate, Heavy Industry, Automotive	Suri, Inc. is a conglomerate primarily focused on heavy and industrial manufacturing. Its largest subsidiary, Suri Heavy Industries, Y.H.C. is the largest manufacturer of commercial ships in the IDU. Suri Motors is Haesan's largest domestic manufacturer of automotives. Suri also has subsidiaries in industrial chemicals, natural gas liquefication, and rare earths mining.
Saerom, Y.C.	SSE: SAE	Anmi	£110,419	Electronics	Saerom, Y.C. is one of the largest producers of microchips in the IDU and is known for its fabrication of special-purpose electronic components. Much of is its business is to domestic manufacturing companies. Saerom was historically a consumer appliances manufacturing firm, but pivoted industries in the early 2000s.
Suryu, Inc.	SSE: SYU	Suyang	£103,676	Conglomerate, Household Appliances, Biotech	Suryu, Inc. is one of the largest manufacturers of household appliances in the IDU, particularly in washers and dryers, in which it is the most prominent brand in the IDU. Suryu is also a notable manufacturer of refrigerators, dishwashers, and heating and cooling systems. Suryu Technologies is a large subsidiary focused on materials innovation and chemical research. Suryu Bio is one of the largest biotech firms in Hesperida, leveraging many Suryu Technologies innovations.
Routiers, Y.C.	BA: ROU	Anfa	£95,501	Petrochemicals	Routiers is a joint-stock company which has rights to roughly 30% of the proven natural gas reserves in Haesan's Gulf exclusive economic area. It also runs a network of petrol stations across Haesan and parts of Laeral.
Jeongmi Group, Y.H.C.	SSE: JM	Suyang	£78,662	Conglomerate, Consumer Goods, Retail	Jeongmi Group, Y.H.C. is a conglomerate primarily focused on the production of consumer goods, including processed foods, furniture, and cosmetics. Jeongmi also operates as a retailer, with its Jeongmi Home stores as large warehouse-style retail outlets selling Jeongmi products.
Astra, Inc.	SSE: AST	Suyang	£72,723	Conglomerate, Telecoms, Energy, Electronics	Astra, Inc. is a conglomerate best known for Astra Telecoms, the second largest satellite-enabled network in the IDU. Astra also maintains other subsidiaries including its green energy division Astra Zap and its electronics and materials innovation branch Astra Spark.
Haejeon, Y.C.	SSE: HJH	Hacheon	£62,739	Utilities	Haesan Jeongi Hoesa, Y.C. commonly known as Haejeon is the largest utility provider in Haesan, powering over 30 million households in southern and central Haesan. The firm maintains dozens of nuclear power plants in the plains provinces, hydroelectric projects including the Eungang Central Dam Complex, and 11 natural gas powerplants.