Metal and Additives Corporation, located in Indiana, USA, was founded in 1973 to focus on the production of specialty chemical additives. MAC acquired Polymer Additives Group in 2006,PAG is a leading U.S. producer of smoke suppressants and flame retardants. Addenda offers professional smoldering and smokiness control solutions. In the polymer sector,Addenda produces special additives to prevent the combustion of materials and products, reduce the smoke density of combustion, and improve the carbonization strength at the combustion interface. We have advanced flame retardant laboratories in China, providing customized flame retardant and smoke suppression solutions and professional flame retardant testing services.