MarkLines Co Ltd engages in provision of automotive industrial portal. The company's Information Platform offers online information services, including information about suppliers, such as who supplies whom, plant data, and market trends; sales and production statistics; reports on technology and market trends; and model plan data comprising forecasts. It also provides B2B promotional support and advertisement services that include promotional emails and banner ads under the LINES name to its Information Platform members. The company serves OEMs, parts suppliers, material suppliers.