Profile: Central States Mfg., Inc. manufactures metal building components. Our products include Panel-Loc™, Panel-Loc Plus™, R-Loc™, M-Loc™, Precision-Loc™, Horizon-Loc™, Central-Seam Plus™ and Central-Loc™. Panel-Loc™ is used for post frame barns and buildings. M-Loc™ is a structural roof and wall panel that can be installed directly over purlins or joists. Central-Loc™ is manufactured from galvalume which offers corrosion resistance of galvanized steel. Galvalume substrates are coated with an alloy of zinc plus aluminum.