- Computer Integrated Systems Design (SIC 7373)
- Computer Related Services, other (SIC 7379)
- Equipment rental and leasing (SIC 7352)
- Information Retrieval Services (SIC 7375)
- Prepackaged Software (SIC 7372)
- Radio/telephone Communication (SIC 4812)
- Computer Facilities Management (SIC 7363)
Lang Company is a full service technology provider committed to help you be more productive in the office. We offer Managed IT, VOIP phones, office copiers and printers, and document management all backed by great service.