Three One Systems International, Inc. is an IT service provider to customers in Chicago and N.Y. Area.

Our goal is always customer's satisfaction.

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Application consultation & implementation

From Accounting to supply chain management, 31systems will help you implementing applications you need as well as developing custom-made applications

IT internal control

31 systems is a rescues of SOA404 compliance, IT risk assessment, and Business continuity planning

Any help on IT network PCs? 31systems responses immediately to your problems and fixes remotely or on-site.

Network, cloud computing, and server installation.. 31systems setup and keeps running them.

If you need manpower temporary for projects, please contact us. 31systems sends our experienced technical staffs to your site to meet your needs.