This U.S. industry comprises establishments primarily engaged in planning and designing computer systems that integrate computer hardware, software, and communication technologies. The hardware and software components of the system may be provided by this establishment or company as part of integrated services or may be provided by third parties or vendors. These establishments often install the system and train and support users of the system. Illustrative Examples: Computer systems integration design consulting services Local area network (LAN) computer systems integration design services Information management computer systems integration design services Office automation computer systems integration design services Cross-References. Establishments primarily engaged in-- ? Selling computer hardware or software products and systems from retail-like locations, and providing supporting services, such as customized assembly of personal computers--are classified in Industry 443120, Computer and Software Stores; and ? Merchant wholesaling computer hardware or software products and providing supporting services, such as customized assembly of personal computers--are classified in Industry 423430, Computer and Computer Peripheral Equipment and Software Merchant Wholesalers.