Taiana Srl is an Italian company that designs and constructs a range of textile machines. One of its specialties is an automatic and computerized warping machine. The company frequently works closely with its clients to manufacture units for highly specific applications. Its most important warping machines are in the 400 series, which consist of sectional electronic warping machines with either fixed or adjustable cones. This series is notable for its universality of application, processing dyed and undyed manmade and natural yarns of all types. A review of these units compares the fixed and adjustable cones and describes the basic structure, sectional warping unit, lease reed, warp beaming unit, breaking system, control system, safety features, and optional features.