Streamline Circuits is dedicated to providing our customers the most reliable and cost effective stack up. Utilizing the latest technology for high speed designs. Please discuss special dielectric requirements with us during the design stage. Stack Up Builder is the most innovative and easy-to-use graphical stack up program in the industry, performing automated prepreg selection, pulling stack ups from libraries, and graphically building stack ups from scratch. Constraint-based approach enables cost optimization rules to determine the most efficient production stack up.