Rainer Grasmuck joined the Baerlocher Group of Companies in 1980. His international career started as Area Sales Manager Asia. In 1987 Rainer Grasmuck became General Manager of Baerlocher do Brasil and in 1991 he was appointed as Managing Director of Baerlocher Italia when he also took global responsibility for liquid stabilizers. In 2009, he returned as Head of SBU PVC Additives India & Americas to the headquarters in Unterschleissheim. Moreover he is a board member of Baerlocher India and serves in various Baerlocher Joint Ventures.
Apart from his position at Baerlocher, he is the Vice President of ESPA (European Stabilizer Producers Association), Board member and Treasurer of VinylPlus (The voluntary sustainable development program of the European PVC industry) and Plastics Europe Germany. Furthermore he serves as board member in the German and Italian PVC Association.