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The SJ Group's core business consists of information services, revolving primarily around systems development.
The Group is also actively involved in petrochemical engineering service.
| Systems development | System development, system consultancy services, system maintenance and support |
|---|---|
| Software products | Sale of software package products and related maintenance and support |
| Information-related products | Sale of BtoB and BtoC software package products, information-related equipment, |
| Petrochemical Enginnering Service | Design,procurement,and sales of facilities and control systems associated with petrochemical business,and project management. |
|---|

※ About Petrochemical Engineering Services, LianDi Clean Technology Inc. became a consolidated subsidiary from October 2011.
With a unique business model covering Japan and China, the SJ Group seeks sustained growth, with SJI Inc. as the holding company and the headquarters for SJ Group companies.
The key features of the SJ Group’s core systems development business are as follows.