Advanced Tech , Phone : (605) 332-1920 Business Category Computers-Service & Repair Computer Services Computers Consultant Service Computer Related Services Computer Related Consulting Service Advanced Tech Po Box 84111 Sioux Falls, SD 57118 Phone : (605) 332-1920 Business Category Computer & Equipment Dealers Computers-Service & Repair Computer Processing & Data Preparation & Processing Services Internet Service Computer Related Services Computer Related Consulting Service