S1 Corporation is an enterprise in South Korea, with the main office in Seoul. The company operates in the Security Systems Services (except Locksmiths) industry. The enterprise was incorporated on November 28, 1977. There are currently 7,044 (2025) people employed by S1 Corporation. In 2025, the company reported a net sales revenue increase of 3.02%. Its’ total assets recorded a growth of 4.71%. The net profit margin of S1 Corporation decreased by 0.12% in 2025.
Headquarters
168 Soonhwa-Dong, Joong-Gu
Seoul; Seoul;
Postal Code: 100-773
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Website: http://www.s1.co.kr
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