The C Itoh Techno-Science subsidiary of the vast C Itoh & Co trading house, which markets Sun Microsystems workstations, has bought a 40% stake in Tokyo company Total Management Services in order to increase its experitse in the business mangement and accounting software field, in particular development of accounting systems: Total Management is primarily a consultancy serving accountants; in the past four years C Itoh techno Science has sold 3,500 Sun workstations, and currently has orders for 1,500 for delivery by March.