Lonza acquires Arch Chemicals, Inc., a global biocides company providing innovative solutions to destroy or to selectively inhibit the growth of harmful microorganisms, to create the world's leading Microbial Control business. The combined businesses will be able to develop innovative microbial control formulations based on a broad portfolio of registered and approved active ingredients. Jeanne Thoma is appointed to Chief Operating Officer for Lonza's Microbial Control sector (LMC) which will be created following the acquisition. Lonza Group Ltd (SIX stock code: LONN VX; SGX-ST stock code: O6Z) makes its trading debut on the Main Board of the Singapore Exchange Securities Trading Limited ("SGX-ST") on 21 October 2011 and consequently is the first SIX Swiss-listed company to dual list in Singapore. Lonza to expand early phase manufacturing capacity at its site in Nansha, China, to serve small molecules market.