These are complex chemical compounds based on proprietary comination of metals (Ba/Cd/Zn/Pb/K etc.) and other additives and are available ti the calendaring, Extrusion injection modling and plastisol coating industries for flexible/semi rigid PVC applications. Depending upon the user requirements and the end use they are available in categories as highly efficient all purpose to general-purpose non-critical application stabilizers or stabilizer/kicker (activator).