Chang-Heum Choi
Director of Finance/CFO at SK MATERIALS CO., LTD.
Network origin in Chang-Heum Choi first degree
| Entity | Entity type | Industry | |
|---|---|---|---|
| Subsidiary | Chemicals: Specialty | 8 |
Chart of Companies connected to the second degree
Multi-company connection
Companies connected to Chang-Heum Choi via their personal network
| Company | Sector | Related people | Main position |
|---|---|---|---|
| Seoul National University | College/University | Graduate Degree Undergraduate Degree Doctorate Degree | |
| SK INC. | Financial Conglomerates | Chief Executive Officer Chief Executive Officer | |
| SK INNOVATION CO., LTD. | Oil Refining/Marketing | Director/Board Member Director/Board Member | |
| Korea University | College/University | Undergraduate Degree Graduate Degree | |
SK Airgas Co., Ltd.
 SK Airgas Co., Ltd. Chemicals: SpecialtyProcess Industries SK Airgas Co., Ltd. produces and supplies industrial and medical gases. Its products include oxygen, nitrogen, carbon dioxide, helium, argon, and nitrous oxide. The company was founded on June 25, 2007 and is headquartered in Ulsan, South Korea. | Chemicals: Specialty | Director/Board Member Comptroller/Controller/Auditor | |
| SK TELECOM CO., LTD. | Wireless Telecommunications | Director of Finance/CFO | |
| Xian OCI Materials Co., Ltd. | Director/Board Member | ||
| University of Southern California Gould School of Law | College/University | Graduate Degree | |
SK Specialty Co Ltd.
 SK Specialty Co Ltd. Chemicals: SpecialtyProcess Industries SK Specialty Co Ltd. produces and sells industrial gases. The private company is located in South Korea. | Chemicals: Specialty | Chief Executive Officer | |
| SK Tri Chem Co., Ltd. | Chief Executive Officer | ||
| Yonsei University | College/University | Undergraduate Degree | |
SK Siltron Co., Ltd.
 SK Siltron Co., Ltd. SemiconductorsElectronic Technology SK Siltron Co., Ltd. is a holding company which manufactures silicon wafers. Its products include semicondutor wafers. The company was founded on April 25, 1983 and is headquartered in Gumi-si, South Korea. | Semiconductors | Chief Executive Officer | |
SK Maritime Co., Ltd.
 SK Maritime Co., Ltd. Marine ShippingTransportation SK Maritime Co., Ltd. provides marine transportation services. The company was founded on June 29, 1982 and is headquartered in Seoul, South Korea. | Marine Shipping | Director/Board Member | |
SK Shipping Co., Ltd.
 SK Shipping Co., Ltd. Marine ShippingTransportation SK Shipping Co., Ltd. provides shipping services. It engages in the transportation of crude oil and oil products, such as naphtha, gas oil, kerosene, gasoline, and air fuel, as well as LNG and LPG through its vessels. It also transports dry bulk, such as raw materials and ingredients, including coal, iron ore, cement, sand, grain, sugar, salt, phosphorus, fertilizer, log, wooden materials, and project cargo. The company was founded on April 1, 2017 and is headquartered in Seoul, South Korea. | Marine Shipping | Director/Board Member | |
| DB HITEK CO., LTD. | Semiconductors | Director/Board Member | |
SK Ecoplant Co., Ltd.
 SK Ecoplant Co., Ltd. Wholesale DistributorsDistribution Services SK Ecoplant Co. Ltd. is a holding company, which offers civil engineering and construction services. The company operates in the following business areas: Housing, Architecture, Infrastructure, Chemical Plant, Power Plants and Ubiquitous Business (u-Business). Its services include construction of residential, commercial, cultural buildings, petrochemical and power plants, roads, bridges and information technology infrastructures and plant engineering. The company was founded on February 21, 1962 and is headquartered in Seoul, South Korea. | Wholesale Distributors | Chief Executive Officer | |
| Inha University | College/University | Undergraduate Degree | |
| SK COMMUNICATIONS CO LTD | Internet Software/Services | Director/Board Member | |
SK, Inc. (Korea)
 SK, Inc. (Korea) Financial ConglomeratesFinance SK Group distributes refined oil and gas. It provides petroleum-refining services, energy products like crude oil, natural gas and refined petroleum. The firm's services are generation, transmission & distribution of electricity, natural gas and water and marketing & trading of energy commodities. The company was founded by Jong-Kun in 1953 and is located in Jongno, South Korea. | Financial Conglomerates | Chief Executive Officer | |
| SK Japan Investment, Inc. | Investment Managers | Director/Board Member | |
| SK SIGNET INC. | Electrical Products | Director/Board Member | |
SK Pharmteco, Inc.
 SK Pharmteco, Inc. Pharmaceuticals: MajorHealth Technology Part of SK, Inc., SK Pharmteco, Inc. is a customer-facing team that includes SK Biotek Ireland, Ampac Fine Chemicals, SK, Yposkesi, and Ampac Analytical. The company is based in Rancho Cordova, CA. The company creates market synergies in the CDMO space by combining complementary assets and expertise. SK Pharmteco provides high-quality services to its customers. Joerg Ahlgrimm has been the CEO of the company since 2022. | Pharmaceuticals: Major | Chairman | |
| Sk South East Asia Investment Pte , Ltd. | Investment Managers | Director/Board Member | |
SK China Co., Ltd.
 SK China Co., Ltd. Financial ConglomeratesFinance SK China Co., Ltd. operates as an investment holding company. The company was founded on April 28, 2000 and is headquartered in Hong Kong. | Financial Conglomerates | Director/Board Member | |
| SKC CO., LTD. | Chemicals: Specialty | Director/Board Member | |
SK Planet Co., Ltd.
 SK Planet Co., Ltd. Packaged SoftwareTechnology Services SK Planet Co., Ltd. provides e-commerce and digital content platforms and services. It operates through the following business areas: Next Commerce, Digital Platform and Marketing Communication. The Next Commerce business division offers online-to-offline commerce services and online marketplace platforms. The Digital Platform business division encompasses digital content platforms. The Marketing Communication division provides communication planning, promotion, interactive communication and advertising platforms. The company was founded on October 1, 2011 and is headquartered in Seongnam, South Korea. | Packaged Software | Chief Operating Officer | |
| SK BROADBAND CO LTD | Major Telecommunications | Director/Board Member | |
| Kyungpook National University | College/University | Undergraduate Degree |
Statistics
International
| South Korea | 24 |
| China | 3 |
| United States | 3 |
| Japan | 2 |
| Singapore | 2 |
Sectoral
| Consumer Services | 7 |
| Finance | 6 |
| Process Industries | 5 |
| Communications | 3 |
| Electronic Technology | 3 |
Operational
| Director/Board Member | 21 |
| Chief Executive Officer | 10 |
| Undergraduate Degree | 6 |
| Sales & Marketing | 4 |
| President | 4 |
Most connected contacts
| Insiders | |
|---|---|
| Dong-Hyun Jang | 16 |
| Yong-Ho Jang | 7 |
| Jong-Heung Park | 5 |
| Kyu-Won Lee | 5 |
| Yong-Hwan Kim | 3 |
| Sang-Gyun Kim | 3 |
| Yong-Wook Lee | 2 |
| Young-Min Kim | 2 |
- Stock Market
- Insiders
- Chang-Heum Choi
- Company connections
